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Finding the Fourth Proportional to 132,510.60, 198,765.90 and 85,271.40

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Solution

The fourth proportional to 132,510.60, 198,765.90 and 85,271.40 is: 127,907.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,510.60 : 198,765.90 = 85,271.40 : x
  2. Step 2: Convert to fraction form
    132,510.60/198,765.90 = 85,271.40/x
  3. Step 3: Cross multiply
    132,510.60x = 198,765.90 × 85,271.40
  4. Step 4: Simplify right side
    132,510.60x = 16,949,046,565.26
  5. Step 5: Solve for x
    x = 16,949,046,565.26/132,510.60
  6. Step 6: Final answer
    x = 127,907.10

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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.