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Finding the Fourth Proportional to 138,046.68, 207,064.08 and 43,274.75

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Solution

The fourth proportional to 138,046.68, 207,064.08 and 43,274.75 is: 64,910.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,046.68 : 207,064.08 = 43,274.75 : x
  2. Step 2: Convert to fraction form
    138,046.68/207,064.08 = 43,274.75/x
  3. Step 3: Cross multiply
    138,046.68x = 207,064.08 × 43,274.75
  4. Step 4: Simplify right side
    138,046.68x = 8,960,645,260.66
  5. Step 5: Solve for x
    x = 8,960,645,260.66/138,046.68
  6. Step 6: Final answer
    x = 64,910.26

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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.