Home / 147,909.10-221,863.65-91,921.90

Finding the Fourth Proportional to 147,909.10, 221,863.65 and 91,921.90

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Solution

The fourth proportional to 147,909.10, 221,863.65 and 91,921.90 is: 137,882.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,909.10 : 221,863.65 = 91,921.90 : x
  2. Step 2: Convert to fraction form
    147,909.10/221,863.65 = 91,921.90/x
  3. Step 3: Cross multiply
    147,909.10x = 221,863.65 × 91,921.90
  4. Step 4: Simplify right side
    147,909.10x = 20,394,128,248.94
  5. Step 5: Solve for x
    x = 20,394,128,248.94/147,909.10
  6. Step 6: Final answer
    x = 137,882.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.