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Finding the Fourth Proportional to 128,773.52, 193,143.87 and 49,833.74

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Solution

The fourth proportional to 128,773.52, 193,143.87 and 49,833.74 is: 74,744.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,773.52 : 193,143.87 = 49,833.74 : x
  2. Step 2: Convert to fraction form
    128,773.52/193,143.87 = 49,833.74/x
  3. Step 3: Cross multiply
    128,773.52x = 193,143.87 × 49,833.74
  4. Step 4: Simplify right side
    128,773.52x = 9,625,081,400.17
  5. Step 5: Solve for x
    x = 9,625,081,400.17/128,773.52
  6. Step 6: Final answer
    x = 74,744.26

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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.