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Finding the Fourth Proportional to 81,768,884,429.70, 122,653,326,644.55 and 81,768,884,429.70

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Solution

The fourth proportional to 81,768,884,429.70, 122,653,326,644.55 and 81,768,884,429.70 is: 122,653,326,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,768,884,429.70 : 122,653,326,644.55 = 81,768,884,429.70 : x
  2. Step 2: Convert to fraction form
    81,768,884,429.70/122,653,326,644.55 = 81,768,884,429.70/x
  3. Step 3: Cross multiply
    81,768,884,429.70x = 122,653,326,644.55 × 81,768,884,429.70
  4. Step 4: Simplify right side
    81,768,884,429.70x = 10,029,225,691,316,452,589,568
  5. Step 5: Solve for x
    x = 10,029,225,691,316,452,589,568/81,768,884,429.70
  6. Step 6: Final answer
    x = 122,653,326,644.55

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1.5x scale

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.