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Finding the Fourth Proportional to 117,354.29, 161,948.03 and 63,639.41

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Solution

The fourth proportional to 117,354.29, 161,948.03 and 63,639.41 is: 87,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,354.29 : 161,948.03 = 63,639.41 : x
  2. Step 2: Convert to fraction form
    117,354.29/161,948.03 = 63,639.41/x
  3. Step 3: Cross multiply
    117,354.29x = 161,948.03 × 63,639.41
  4. Step 4: Simplify right side
    117,354.29x = 10,306,275,951.93
  5. Step 5: Solve for x
    x = 10,306,275,951.93/117,354.29
  6. Step 6: Final answer
    x = 87,821.90

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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.