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Finding the Fourth Proportional to 121,796.10, 182,694.15 and 42,891.84

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Solution

The fourth proportional to 121,796.10, 182,694.15 and 42,891.84 is: 64,337.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,796.10 : 182,694.15 = 42,891.84 : x
  2. Step 2: Convert to fraction form
    121,796.10/182,694.15 = 42,891.84/x
  3. Step 3: Cross multiply
    121,796.10x = 182,694.15 × 42,891.84
  4. Step 4: Simplify right side
    121,796.10x = 7,836,088,250.74
  5. Step 5: Solve for x
    x = 7,836,088,250.74/121,796.10
  6. Step 6: Final answer
    x = 64,337.76

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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.