Home / 99,231.60-136,939.05-53,909.22

Finding the Fourth Proportional to 99,231.60, 136,939.05 and 53,909.22

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Solution

The fourth proportional to 99,231.60, 136,939.05 and 53,909.22 is: 74,394.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,231.60 : 136,939.05 = 53,909.22 : x
  2. Step 2: Convert to fraction form
    99,231.60/136,939.05 = 53,909.22/x
  3. Step 3: Cross multiply
    99,231.60x = 136,939.05 × 53,909.22
  4. Step 4: Simplify right side
    99,231.60x = 7,382,277,373.04
  5. Step 5: Solve for x
    x = 7,382,277,373.04/99,231.60
  6. Step 6: Final answer
    x = 74,394.42

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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.