Home / 252,031.12-378,120.56-74,542.88

Finding the Fourth Proportional to 252,031.12, 378,120.56 and 74,542.88

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Solution

The fourth proportional to 252,031.12, 378,120.56 and 74,542.88 is: 111,836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,031.12 : 378,120.56 = 74,542.88 : x
  2. Step 2: Convert to fraction form
    252,031.12/378,120.56 = 74,542.88/x
  3. Step 3: Cross multiply
    252,031.12x = 378,120.56 × 74,542.88
  4. Step 4: Simplify right side
    252,031.12x = 28,186,195,529.61
  5. Step 5: Solve for x
    x = 28,186,195,529.61/252,031.12
  6. Step 6: Final answer
    x = 111,836.17

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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.