Home / 80,755.44-121,330.26-76,279.38

Finding the Fourth Proportional to 80,755.44, 121,330.26 and 76,279.38

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Solution

The fourth proportional to 80,755.44, 121,330.26 and 76,279.38 is: 114,605.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,755.44 : 121,330.26 = 76,279.38 : x
  2. Step 2: Convert to fraction form
    80,755.44/121,330.26 = 76,279.38/x
  3. Step 3: Cross multiply
    80,755.44x = 121,330.26 × 76,279.38
  4. Step 4: Simplify right side
    80,755.44x = 9,254,997,008.04
  5. Step 5: Solve for x
    x = 9,254,997,008.04/80,755.44
  6. Step 6: Final answer
    x = 114,605.25

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1.5x scale

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.