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Finding the Fourth Proportional to 123,674.80, 185,614.60 and 57,217.20

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Solution

The fourth proportional to 123,674.80, 185,614.60 and 57,217.20 is: 85,873.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,674.80 : 185,614.60 = 57,217.20 : x
  2. Step 2: Convert to fraction form
    123,674.80/185,614.60 = 57,217.20/x
  3. Step 3: Cross multiply
    123,674.80x = 185,614.60 × 57,217.20
  4. Step 4: Simplify right side
    123,674.80x = 10,620,347,691.12
  5. Step 5: Solve for x
    x = 10,620,347,691.12/123,674.80
  6. Step 6: Final answer
    x = 85,873.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.