Home / 156,147,229.80-215,581,147.65-100,489,370.13

Finding the Fourth Proportional to 156,147,229.80, 215,581,147.65 and 100,489,370.13

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Solution

The fourth proportional to 156,147,229.80, 215,581,147.65 and 100,489,370.13 is: 138,738,380.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,147,229.80 : 215,581,147.65 = 100,489,370.13 : x
  2. Step 2: Convert to fraction form
    156,147,229.80/215,581,147.65 = 100,489,370.13/x
  3. Step 3: Cross multiply
    156,147,229.80x = 215,581,147.65 × 100,489,370.13
  4. Step 4: Simplify right side
    156,147,229.80x = 21,663,613,739,251,028
  5. Step 5: Solve for x
    x = 21,663,613,739,251,028/156,147,229.80
  6. Step 6: Final answer
    x = 138,738,380.23

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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.