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Finding the Fourth Proportional to 123,502.92, 170,425.62 and 69,790.20

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Solution

The fourth proportional to 123,502.92, 170,425.62 and 69,790.20 is: 96,305.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,502.92 : 170,425.62 = 69,790.20 : x
  2. Step 2: Convert to fraction form
    123,502.92/170,425.62 = 69,790.20/x
  3. Step 3: Cross multiply
    123,502.92x = 170,425.62 × 69,790.20
  4. Step 4: Simplify right side
    123,502.92x = 11,894,038,104.92
  5. Step 5: Solve for x
    x = 11,894,038,104.92/123,502.92
  6. Step 6: Final answer
    x = 96,305.72

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1.5x scale

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.