Home / 156,132,861.30-215,561,285.73-100,474,983.18

Finding the Fourth Proportional to 156,132,861.30, 215,561,285.73 and 100,474,983.18

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Solution

The fourth proportional to 156,132,861.30, 215,561,285.73 and 100,474,983.18 is: 138,718,501.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,132,861.30 : 215,561,285.73 = 100,474,983.18 : x
  2. Step 2: Convert to fraction form
    156,132,861.30/215,561,285.73 = 100,474,983.18/x
  3. Step 3: Cross multiply
    156,132,861.30x = 215,561,285.73 × 100,474,983.18
  4. Step 4: Simplify right side
    156,132,861.30x = 21,658,516,557,980,924
  5. Step 5: Solve for x
    x = 21,658,516,557,980,924/156,132,861.30
  6. Step 6: Final answer
    x = 138,718,501.52

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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.