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Finding the Fourth Proportional to 136,925.20, 205,042.20 and 89,923.60

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Solution

The fourth proportional to 136,925.20, 205,042.20 and 89,923.60 is: 134,658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,925.20 : 205,042.20 = 89,923.60 : x
  2. Step 2: Convert to fraction form
    136,925.20/205,042.20 = 89,923.60/x
  3. Step 3: Cross multiply
    136,925.20x = 205,042.20 × 89,923.60
  4. Step 4: Simplify right side
    136,925.20x = 18,438,132,775.92
  5. Step 5: Solve for x
    x = 18,438,132,775.92/136,925.20
  6. Step 6: Final answer
    x = 134,658.43

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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.