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Finding the Fourth Proportional to 252,011.04, 378,023.04 and 72,123

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Solution

The fourth proportional to 252,011.04, 378,023.04 and 72,123 is: 108,186.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,011.04 : 378,023.04 = 72,123 : x
  2. Step 2: Convert to fraction form
    252,011.04/378,023.04 = 72,123/x
  3. Step 3: Cross multiply
    252,011.04x = 378,023.04 × 72,123
  4. Step 4: Simplify right side
    252,011.04x = 27,264,155,713.92
  5. Step 5: Solve for x
    x = 27,264,155,713.92/252,011.04
  6. Step 6: Final answer
    x = 108,186.35

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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.