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Finding the Fourth Proportional to 132,671.34, 199,103.20 and 99,480.78

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Solution

The fourth proportional to 132,671.34, 199,103.20 and 99,480.78 is: 149,293.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,671.34 : 199,103.20 = 99,480.78 : x
  2. Step 2: Convert to fraction form
    132,671.34/199,103.20 = 99,480.78/x
  3. Step 3: Cross multiply
    132,671.34x = 199,103.20 × 99,480.78
  4. Step 4: Simplify right side
    132,671.34x = 19,806,941,387.79
  5. Step 5: Solve for x
    x = 19,806,941,387.79/132,671.34
  6. Step 6: Final answer
    x = 149,293.29

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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.