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Finding the Fourth Proportional to 81,082,655,137.70, 121,623,982,706.55 and 81,082,655,137.70

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Solution

The fourth proportional to 81,082,655,137.70, 121,623,982,706.55 and 81,082,655,137.70 is: 121,623,982,706.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,082,655,137.70 : 121,623,982,706.55 = 81,082,655,137.70 : x
  2. Step 2: Convert to fraction form
    81,082,655,137.70/121,623,982,706.55 = 81,082,655,137.70/x
  3. Step 3: Cross multiply
    81,082,655,137.70x = 121,623,982,706.55 × 81,082,655,137.70
  4. Step 4: Simplify right side
    81,082,655,137.70x = 9,861,595,446,268,781,395,968
  5. Step 5: Solve for x
    x = 9,861,595,446,268,781,395,968/81,082,655,137.70
  6. Step 6: Final answer
    x = 121,623,982,706.55

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.