Home / 147,631.10-221,446.65-81,275.90

Finding the Fourth Proportional to 147,631.10, 221,446.65 and 81,275.90

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Solution

The fourth proportional to 147,631.10, 221,446.65 and 81,275.90 is: 121,913.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,631.10 : 221,446.65 = 81,275.90 : x
  2. Step 2: Convert to fraction form
    147,631.10/221,446.65 = 81,275.90/x
  3. Step 3: Cross multiply
    147,631.10x = 221,446.65 × 81,275.90
  4. Step 4: Simplify right side
    147,631.10x = 17,998,275,780.74
  5. Step 5: Solve for x
    x = 17,998,275,780.74/147,631.10
  6. Step 6: Final answer
    x = 121,913.85

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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.