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Finding the Fourth Proportional to 176,122.78, 243,049.41 and 100,672.90

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Solution

The fourth proportional to 176,122.78, 243,049.41 and 100,672.90 is: 138,928.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,122.78 : 243,049.41 = 100,672.90 : x
  2. Step 2: Convert to fraction form
    176,122.78/243,049.41 = 100,672.90/x
  3. Step 3: Cross multiply
    176,122.78x = 243,049.41 × 100,672.90
  4. Step 4: Simplify right side
    176,122.78x = 24,468,488,947.99
  5. Step 5: Solve for x
    x = 24,468,488,947.99/176,122.78
  6. Step 6: Final answer
    x = 138,928.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.