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Finding the Fourth Proportional to 123,473.68, 170,393.50 and 66,885.28

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Solution

The fourth proportional to 123,473.68, 170,393.50 and 66,885.28 is: 92,301.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,473.68 : 170,393.50 = 66,885.28 : x
  2. Step 2: Convert to fraction form
    123,473.68/170,393.50 = 66,885.28/x
  3. Step 3: Cross multiply
    123,473.68x = 170,393.50 × 66,885.28
  4. Step 4: Simplify right side
    123,473.68x = 11,396,816,957.68
  5. Step 5: Solve for x
    x = 11,396,816,957.68/123,473.68
  6. Step 6: Final answer
    x = 92,301.59

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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.