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Finding the Fourth Proportional to 99,065.52, 136,711.68 and 53,743.80

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Solution

The fourth proportional to 99,065.52, 136,711.68 and 53,743.80 is: 74,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,065.52 : 136,711.68 = 53,743.80 : x
  2. Step 2: Convert to fraction form
    99,065.52/136,711.68 = 53,743.80/x
  3. Step 3: Cross multiply
    99,065.52x = 136,711.68 × 53,743.80
  4. Step 4: Simplify right side
    99,065.52x = 7,347,405,187.58
  5. Step 5: Solve for x
    x = 7,347,405,187.58/99,065.52
  6. Step 6: Final answer
    x = 74,167.13

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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.