Home / 252,123.12-378,253.80-132,188.04

Finding the Fourth Proportional to 252,123.12, 378,253.80 and 132,188.04

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Solution

The fourth proportional to 252,123.12, 378,253.80 and 132,188.04 is: 198,318.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,123.12 : 378,253.80 = 132,188.04 : x
  2. Step 2: Convert to fraction form
    252,123.12/378,253.80 = 132,188.04/x
  3. Step 3: Cross multiply
    252,123.12x = 378,253.80 × 132,188.04
  4. Step 4: Simplify right side
    252,123.12x = 50,000,628,444.55
  5. Step 5: Solve for x
    x = 50,000,628,444.55/252,123.12
  6. Step 6: Final answer
    x = 198,318.30

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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.