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Finding the Fourth Proportional to 173,305.28, 239,130 and 100,711.44

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Solution

The fourth proportional to 173,305.28, 239,130 and 100,711.44 is: 138,963.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,305.28 : 239,130 = 100,711.44 : x
  2. Step 2: Convert to fraction form
    173,305.28/239,130 = 100,711.44/x
  3. Step 3: Cross multiply
    173,305.28x = 239,130 × 100,711.44
  4. Step 4: Simplify right side
    173,305.28x = 24,083,126,647.20
  5. Step 5: Solve for x
    x = 24,083,126,647.20/173,305.28
  6. Step 6: Final answer
    x = 138,963.61

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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.