Home / 99,581.60-137,378.16-67,305.92

Finding the Fourth Proportional to 99,581.60, 137,378.16 and 67,305.92

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Solution

The fourth proportional to 99,581.60, 137,378.16 and 67,305.92 is: 92,852.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,581.60 : 137,378.16 = 67,305.92 : x
  2. Step 2: Convert to fraction form
    99,581.60/137,378.16 = 67,305.92/x
  3. Step 3: Cross multiply
    99,581.60x = 137,378.16 × 67,305.92
  4. Step 4: Simplify right side
    99,581.60x = 9,246,363,446.71
  5. Step 5: Solve for x
    x = 9,246,363,446.71/99,581.60
  6. Step 6: Final answer
    x = 92,852.13

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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.