Home / 91,550.40-137,874.26-80,577.06

Finding the Fourth Proportional to 91,550.40, 137,874.26 and 80,577.06

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Solution

The fourth proportional to 91,550.40, 137,874.26 and 80,577.06 is: 121,348.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,550.40 : 137,874.26 = 80,577.06 : x
  2. Step 2: Convert to fraction form
    91,550.40/137,874.26 = 80,577.06/x
  3. Step 3: Cross multiply
    91,550.40x = 137,874.26 × 80,577.06
  4. Step 4: Simplify right side
    91,550.40x = 11,109,502,117.59
  5. Step 5: Solve for x
    x = 11,109,502,117.59/91,550.40
  6. Step 6: Final answer
    x = 121,348.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.