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Finding the Fourth Proportional to 138,005.92, 206,676.72 and 93,497.74

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Solution

The fourth proportional to 138,005.92, 206,676.72 and 93,497.74 is: 140,021.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,005.92 : 206,676.72 = 93,497.74 : x
  2. Step 2: Convert to fraction form
    138,005.92/206,676.72 = 93,497.74/x
  3. Step 3: Cross multiply
    138,005.92x = 206,676.72 × 93,497.74
  4. Step 4: Simplify right side
    138,005.92x = 19,323,806,230.61
  5. Step 5: Solve for x
    x = 19,323,806,230.61/138,005.92
  6. Step 6: Final answer
    x = 140,021.57

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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.