Home / 78,230.20-117,121.66-73,264.48

Finding the Fourth Proportional to 78,230.20, 117,121.66 and 73,264.48

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Solution

The fourth proportional to 78,230.20, 117,121.66 and 73,264.48 is: 109,687.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,230.20 : 117,121.66 = 73,264.48 : x
  2. Step 2: Convert to fraction form
    78,230.20/117,121.66 = 73,264.48/x
  3. Step 3: Cross multiply
    78,230.20x = 117,121.66 × 73,264.48
  4. Step 4: Simplify right side
    78,230.20x = 8,580,857,516.64
  5. Step 5: Solve for x
    x = 8,580,857,516.64/78,230.20
  6. Step 6: Final answer
    x = 109,687.28

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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.