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Finding the Fourth Proportional to 129,229.93, 193,858.72 and 54,357.68

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Solution

The fourth proportional to 129,229.93, 193,858.72 and 54,357.68 is: 81,542.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,229.93 : 193,858.72 = 54,357.68 : x
  2. Step 2: Convert to fraction form
    129,229.93/193,858.72 = 54,357.68/x
  3. Step 3: Cross multiply
    129,229.93x = 193,858.72 × 54,357.68
  4. Step 4: Simplify right side
    129,229.93x = 10,537,710,615.72
  5. Step 5: Solve for x
    x = 10,537,710,615.72/129,229.93
  6. Step 6: Final answer
    x = 81,542.34

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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.