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Finding the Fourth Proportional to 188,842.20, 282,607.20 and 129,793.20

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Solution

The fourth proportional to 188,842.20, 282,607.20 and 129,793.20 is: 194,238.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,842.20 : 282,607.20 = 129,793.20 : x
  2. Step 2: Convert to fraction form
    188,842.20/282,607.20 = 129,793.20/x
  3. Step 3: Cross multiply
    188,842.20x = 282,607.20 × 129,793.20
  4. Step 4: Simplify right side
    188,842.20x = 36,680,492,831.04
  5. Step 5: Solve for x
    x = 36,680,492,831.04/188,842.20
  6. Step 6: Final answer
    x = 194,238.86

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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.