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Finding the Fourth Proportional to 99,610.53, 137,458.49 and 54,287.55

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Solution

The fourth proportional to 99,610.53, 137,458.49 and 54,287.55 is: 74,914.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,610.53 : 137,458.49 = 54,287.55 : x
  2. Step 2: Convert to fraction form
    99,610.53/137,458.49 = 54,287.55/x
  3. Step 3: Cross multiply
    99,610.53x = 137,458.49 × 54,287.55
  4. Step 4: Simplify right side
    99,610.53x = 7,462,284,377.36
  5. Step 5: Solve for x
    x = 7,462,284,377.36/99,610.53
  6. Step 6: Final answer
    x = 74,914.62

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1.5x scale

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.