Home / 156,344,992,142.11-215,744,248,500.07-87,743,156,016.12

Finding the Fourth Proportional to 156,344,992,142.11, 215,744,248,500.07 and 87,743,156,016.12

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Solution

The fourth proportional to 156,344,992,142.11, 215,744,248,500.07 and 87,743,156,016.12 is: 121,078,910,148.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,344,992,142.11 : 215,744,248,500.07 = 87,743,156,016.12 : x
  2. Step 2: Convert to fraction form
    156,344,992,142.11/215,744,248,500.07 = 87,743,156,016.12/x
  3. Step 3: Cross multiply
    156,344,992,142.11x = 215,744,248,500.07 × 87,743,156,016.12
  4. Step 4: Simplify right side
    156,344,992,142.11x = 18,930,081,255,722,204,528,640
  5. Step 5: Solve for x
    x = 18,930,081,255,722,204,528,640/156,344,992,142.11
  6. Step 6: Final answer
    x = 121,078,910,148.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.