Home / 99,931.20-137,841.62-76,005.42

Finding the Fourth Proportional to 99,931.20, 137,841.62 and 76,005.42

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Solution

The fourth proportional to 99,931.20, 137,841.62 and 76,005.42 is: 104,839.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,931.20 : 137,841.62 = 76,005.42 : x
  2. Step 2: Convert to fraction form
    99,931.20/137,841.62 = 76,005.42/x
  3. Step 3: Cross multiply
    99,931.20x = 137,841.62 × 76,005.42
  4. Step 4: Simplify right side
    99,931.20x = 10,476,710,221.58
  5. Step 5: Solve for x
    x = 10,476,710,221.58/99,931.20
  6. Step 6: Final answer
    x = 104,839.23

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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.