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Finding the Fourth Proportional to 123,489.54, 185,234.28 and 56,909.96

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Solution

The fourth proportional to 123,489.54, 185,234.28 and 56,909.96 is: 85,364.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,489.54 : 185,234.28 = 56,909.96 : x
  2. Step 2: Convert to fraction form
    123,489.54/185,234.28 = 56,909.96/x
  3. Step 3: Cross multiply
    123,489.54x = 185,234.28 × 56,909.96
  4. Step 4: Simplify right side
    123,489.54x = 10,541,675,465.43
  5. Step 5: Solve for x
    x = 10,541,675,465.43/123,489.54
  6. Step 6: Final answer
    x = 85,364.93

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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.