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Finding the Fourth Proportional to 123,572.70, 185,315.85 and 64,388.70

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Solution

The fourth proportional to 123,572.70, 185,315.85 and 64,388.70 is: 96,560.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,572.70 : 185,315.85 = 64,388.70 : x
  2. Step 2: Convert to fraction form
    123,572.70/185,315.85 = 64,388.70/x
  3. Step 3: Cross multiply
    123,572.70x = 185,315.85 × 64,388.70
  4. Step 4: Simplify right side
    123,572.70x = 11,932,246,670.90
  5. Step 5: Solve for x
    x = 11,932,246,670.90/123,572.70
  6. Step 6: Final answer
    x = 96,560.54

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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.