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Finding the Fourth Proportional to 124,385.88, 186,591.78 and 53,315.64

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Solution

The fourth proportional to 124,385.88, 186,591.78 and 53,315.64 is: 79,979.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,385.88 : 186,591.78 = 53,315.64 : x
  2. Step 2: Convert to fraction form
    124,385.88/186,591.78 = 53,315.64/x
  3. Step 3: Cross multiply
    124,385.88x = 186,591.78 × 53,315.64
  4. Step 4: Simplify right side
    124,385.88x = 9,948,260,169.44
  5. Step 5: Solve for x
    x = 9,948,260,169.44/124,385.88
  6. Step 6: Final answer
    x = 79,979.02

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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.