Home / 156,422.13-215,747.89-102,687.54

Finding the Fourth Proportional to 156,422.13, 215,747.89 and 102,687.54

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Solution

The fourth proportional to 156,422.13, 215,747.89 and 102,687.54 is: 141,633.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,422.13 : 215,747.89 = 102,687.54 : x
  2. Step 2: Convert to fraction form
    156,422.13/215,747.89 = 102,687.54/x
  3. Step 3: Cross multiply
    156,422.13x = 215,747.89 × 102,687.54
  4. Step 4: Simplify right side
    156,422.13x = 22,154,620,084.29
  5. Step 5: Solve for x
    x = 22,154,620,084.29/156,422.13
  6. Step 6: Final answer
    x = 141,633.54

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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.