Home / 132,454.40-198,681.60-85,215.20

Finding the Fourth Proportional to 132,454.40, 198,681.60 and 85,215.20

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Solution

The fourth proportional to 132,454.40, 198,681.60 and 85,215.20 is: 127,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,454.40 : 198,681.60 = 85,215.20 : x
  2. Step 2: Convert to fraction form
    132,454.40/198,681.60 = 85,215.20/x
  3. Step 3: Cross multiply
    132,454.40x = 198,681.60 × 85,215.20
  4. Step 4: Simplify right side
    132,454.40x = 16,930,692,280.32
  5. Step 5: Solve for x
    x = 16,930,692,280.32/132,454.40
  6. Step 6: Final answer
    x = 127,822.80

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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.