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Finding the Fourth Proportional to 86,551.70, 121,522.30 and 86,551.70

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Solution

The fourth proportional to 86,551.70, 121,522.30 and 86,551.70 is: 121,522.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,551.70 : 121,522.30 = 86,551.70 : x
  2. Step 2: Convert to fraction form
    86,551.70/121,522.30 = 86,551.70/x
  3. Step 3: Cross multiply
    86,551.70x = 121,522.30 × 86,551.70
  4. Step 4: Simplify right side
    86,551.70x = 10,517,961,652.91
  5. Step 5: Solve for x
    x = 10,517,961,652.91/86,551.70
  6. Step 6: Final answer
    x = 121,522.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.