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Finding the Fourth Proportional to 121,803.90, 182,446.65 and 101,067.90

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Solution

The fourth proportional to 121,803.90, 182,446.65 and 101,067.90 is: 151,386.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,803.90 : 182,446.65 = 101,067.90 : x
  2. Step 2: Convert to fraction form
    121,803.90/182,446.65 = 101,067.90/x
  3. Step 3: Cross multiply
    121,803.90x = 182,446.65 × 101,067.90
  4. Step 4: Simplify right side
    121,803.90x = 18,439,499,777.54
  5. Step 5: Solve for x
    x = 18,439,499,777.54/121,803.90
  6. Step 6: Final answer
    x = 151,386.78

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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.