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Finding the Fourth Proportional to 132,003.20, 198,004.80 and 115,619.20

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Solution

The fourth proportional to 132,003.20, 198,004.80 and 115,619.20 is: 173,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,003.20 : 198,004.80 = 115,619.20 : x
  2. Step 2: Convert to fraction form
    132,003.20/198,004.80 = 115,619.20/x
  3. Step 3: Cross multiply
    132,003.20x = 198,004.80 × 115,619.20
  4. Step 4: Simplify right side
    132,003.20x = 22,893,156,572.16
  5. Step 5: Solve for x
    x = 22,893,156,572.16/132,003.20
  6. Step 6: Final answer
    x = 173,428.80

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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.