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Finding the Fourth Proportional to 140,375.20, 210,562.80 and 133,463.20

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Solution

The fourth proportional to 140,375.20, 210,562.80 and 133,463.20 is: 200,194.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,375.20 : 210,562.80 = 133,463.20 : x
  2. Step 2: Convert to fraction form
    140,375.20/210,562.80 = 133,463.20/x
  3. Step 3: Cross multiply
    140,375.20x = 210,562.80 × 133,463.20
  4. Step 4: Simplify right side
    140,375.20x = 28,102,385,088.96
  5. Step 5: Solve for x
    x = 28,102,385,088.96/140,375.20
  6. Step 6: Final answer
    x = 200,194.80

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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.