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Finding the Fourth Proportional to 129,065.52, 193,673 and 54,179.12

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Solution

The fourth proportional to 129,065.52, 193,673 and 54,179.12 is: 81,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,065.52 : 193,673 = 54,179.12 : x
  2. Step 2: Convert to fraction form
    129,065.52/193,673 = 54,179.12/x
  3. Step 3: Cross multiply
    129,065.52x = 193,673 × 54,179.12
  4. Step 4: Simplify right side
    129,065.52x = 10,493,032,707.76
  5. Step 5: Solve for x
    x = 10,493,032,707.76/129,065.52
  6. Step 6: Final answer
    x = 81,300.05

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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.