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Finding the Fourth Proportional to 132,511.60, 198,767.40 and 85,272.40

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Solution

The fourth proportional to 132,511.60, 198,767.40 and 85,272.40 is: 127,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,511.60 : 198,767.40 = 85,272.40 : x
  2. Step 2: Convert to fraction form
    132,511.60/198,767.40 = 85,272.40/x
  3. Step 3: Cross multiply
    132,511.60x = 198,767.40 × 85,272.40
  4. Step 4: Simplify right side
    132,511.60x = 16,949,373,239.76
  5. Step 5: Solve for x
    x = 16,949,373,239.76/132,511.60
  6. Step 6: Final answer
    x = 127,908.60

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1.5x scale

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.