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Finding the Fourth Proportional to 120,862.92, 166,781.04 and 69,878.92

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Solution

The fourth proportional to 120,862.92, 166,781.04 and 69,878.92 is: 96,427.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,862.92 : 166,781.04 = 69,878.92 : x
  2. Step 2: Convert to fraction form
    120,862.92/166,781.04 = 69,878.92/x
  3. Step 3: Cross multiply
    120,862.92x = 166,781.04 × 69,878.92
  4. Step 4: Simplify right side
    120,862.92x = 11,654,478,951.68
  5. Step 5: Solve for x
    x = 11,654,478,951.68/120,862.92
  6. Step 6: Final answer
    x = 96,427.25

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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.