Home / 99,732.08-137,630.40-54,409.92

Finding the Fourth Proportional to 99,732.08, 137,630.40 and 54,409.92

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Solution

The fourth proportional to 99,732.08, 137,630.40 and 54,409.92 is: 75,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,732.08 : 137,630.40 = 54,409.92 : x
  2. Step 2: Convert to fraction form
    99,732.08/137,630.40 = 54,409.92/x
  3. Step 3: Cross multiply
    99,732.08x = 137,630.40 × 54,409.92
  4. Step 4: Simplify right side
    99,732.08x = 7,488,459,053.57
  5. Step 5: Solve for x
    x = 7,488,459,053.57/99,732.08
  6. Step 6: Final answer
    x = 75,085.76

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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.