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Finding the Fourth Proportional to 126,449.79, 174,498.65 and 69,087.88

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Solution

The fourth proportional to 126,449.79, 174,498.65 and 69,087.88 is: 95,340.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,449.79 : 174,498.65 = 69,087.88 : x
  2. Step 2: Convert to fraction form
    126,449.79/174,498.65 = 69,087.88/x
  3. Step 3: Cross multiply
    126,449.79x = 174,498.65 × 69,087.88
  4. Step 4: Simplify right side
    126,449.79x = 12,055,741,009.68
  5. Step 5: Solve for x
    x = 12,055,741,009.68/126,449.79
  6. Step 6: Final answer
    x = 95,340.14

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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.