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Finding the Fourth Proportional to 123,098.64, 169,885.40 and 69,388.68

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Solution

The fourth proportional to 123,098.64, 169,885.40 and 69,388.68 is: 95,761.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,098.64 : 169,885.40 = 69,388.68 : x
  2. Step 2: Convert to fraction form
    123,098.64/169,885.40 = 69,388.68/x
  3. Step 3: Cross multiply
    123,098.64x = 169,885.40 × 69,388.68
  4. Step 4: Simplify right side
    123,098.64x = 11,788,123,657.27
  5. Step 5: Solve for x
    x = 11,788,123,657.27/123,098.64
  6. Step 6: Final answer
    x = 95,761.61

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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.