Home / 78,177.18-117,264.83-19,012.92

Finding the Fourth Proportional to 78,177.18, 117,264.83 and 19,012.92

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Solution

The fourth proportional to 78,177.18, 117,264.83 and 19,012.92 is: 28,519.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,177.18 : 117,264.83 = 19,012.92 : x
  2. Step 2: Convert to fraction form
    78,177.18/117,264.83 = 19,012.92/x
  3. Step 3: Cross multiply
    78,177.18x = 117,264.83 × 19,012.92
  4. Step 4: Simplify right side
    78,177.18x = 2,229,546,296.80
  5. Step 5: Solve for x
    x = 2,229,546,296.80/78,177.18
  6. Step 6: Final answer
    x = 28,519.14

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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.