Home / 156,187.20-215,480.34-102,502.02

Finding the Fourth Proportional to 156,187.20, 215,480.34 and 102,502.02

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Solution

The fourth proportional to 156,187.20, 215,480.34 and 102,502.02 is: 141,414.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,187.20 : 215,480.34 = 102,502.02 : x
  2. Step 2: Convert to fraction form
    156,187.20/215,480.34 = 102,502.02/x
  3. Step 3: Cross multiply
    156,187.20x = 215,480.34 × 102,502.02
  4. Step 4: Simplify right side
    156,187.20x = 22,087,170,120.29
  5. Step 5: Solve for x
    x = 22,087,170,120.29/156,187.20
  6. Step 6: Final answer
    x = 141,414.73

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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.