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Finding the Fourth Proportional to 132,407.40, 198,999.90 and 115,300.20

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Solution

The fourth proportional to 132,407.40, 198,999.90 and 115,300.20 is: 173,288.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,407.40 : 198,999.90 = 115,300.20 : x
  2. Step 2: Convert to fraction form
    132,407.40/198,999.90 = 115,300.20/x
  3. Step 3: Cross multiply
    132,407.40x = 198,999.90 × 115,300.20
  4. Step 4: Simplify right side
    132,407.40x = 22,944,728,269.98
  5. Step 5: Solve for x
    x = 22,944,728,269.98/132,407.40
  6. Step 6: Final answer
    x = 173,288.87

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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.