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Finding the Fourth Proportional to 117,495.85, 162,143.76 and 63,780.43

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Solution

The fourth proportional to 117,495.85, 162,143.76 and 63,780.43 is: 88,016.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,495.85 : 162,143.76 = 63,780.43 : x
  2. Step 2: Convert to fraction form
    117,495.85/162,143.76 = 63,780.43/x
  3. Step 3: Cross multiply
    117,495.85x = 162,143.76 × 63,780.43
  4. Step 4: Simplify right side
    117,495.85x = 10,341,598,734.62
  5. Step 5: Solve for x
    x = 10,341,598,734.62/117,495.85
  6. Step 6: Final answer
    x = 88,016.71

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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.