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Finding the Fourth Proportional to 148,591.67, 204,816.80 and 121,686.71

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Solution

The fourth proportional to 148,591.67, 204,816.80 and 121,686.71 is: 167,731.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,591.67 : 204,816.80 = 121,686.71 : x
  2. Step 2: Convert to fraction form
    148,591.67/204,816.80 = 121,686.71/x
  3. Step 3: Cross multiply
    148,591.67x = 204,816.80 × 121,686.71
  4. Step 4: Simplify right side
    148,591.67x = 24,923,481,824.86
  5. Step 5: Solve for x
    x = 24,923,481,824.86/148,591.67
  6. Step 6: Final answer
    x = 167,731.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.