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Finding the Fourth Proportional to 138,026.38, 207,039.69 and 43,263.97

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Solution

The fourth proportional to 138,026.38, 207,039.69 and 43,263.97 is: 64,895.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,026.38 : 207,039.69 = 43,263.97 : x
  2. Step 2: Convert to fraction form
    138,026.38/207,039.69 = 43,263.97/x
  3. Step 3: Cross multiply
    138,026.38x = 207,039.69 × 43,263.97
  4. Step 4: Simplify right side
    138,026.38x = 8,957,357,685.45
  5. Step 5: Solve for x
    x = 8,957,357,685.45/138,026.38
  6. Step 6: Final answer
    x = 64,895.99

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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.