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Finding the Fourth Proportional to 120,482, 166,261.24 and 72,727.04

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Solution

The fourth proportional to 120,482, 166,261.24 and 72,727.04 is: 100,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,482 : 166,261.24 = 72,727.04 : x
  2. Step 2: Convert to fraction form
    120,482/166,261.24 = 72,727.04/x
  3. Step 3: Cross multiply
    120,482x = 166,261.24 × 72,727.04
  4. Step 4: Simplify right side
    120,482x = 12,091,687,851.93
  5. Step 5: Solve for x
    x = 12,091,687,851.93/120,482
  6. Step 6: Final answer
    x = 100,360.95

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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.