Home / 78,073.66-117,227.14-76,907.26

Finding the Fourth Proportional to 78,073.66, 117,227.14 and 76,907.26

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Solution

The fourth proportional to 78,073.66, 117,227.14 and 76,907.26 is: 115,475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,073.66 : 117,227.14 = 76,907.26 : x
  2. Step 2: Convert to fraction form
    78,073.66/117,227.14 = 76,907.26/x
  3. Step 3: Cross multiply
    78,073.66x = 117,227.14 × 76,907.26
  4. Step 4: Simplify right side
    78,073.66x = 9,015,618,135.04
  5. Step 5: Solve for x
    x = 9,015,618,135.04/78,073.66
  6. Step 6: Final answer
    x = 115,475.80

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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.