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Finding the Fourth Proportional to 99,397.88, 137,165.56 and 54,074.60

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Solution

The fourth proportional to 99,397.88, 137,165.56 and 54,074.60 is: 74,621.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,397.88 : 137,165.56 = 54,074.60 : x
  2. Step 2: Convert to fraction form
    99,397.88/137,165.56 = 54,074.60/x
  3. Step 3: Cross multiply
    99,397.88x = 137,165.56 × 54,074.60
  4. Step 4: Simplify right side
    99,397.88x = 7,417,172,790.78
  5. Step 5: Solve for x
    x = 7,417,172,790.78/99,397.88
  6. Step 6: Final answer
    x = 74,621.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.