Home / 81,377.60-121,456.29-76,063.19

Finding the Fourth Proportional to 81,377.60, 121,456.29 and 76,063.19

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Solution

The fourth proportional to 81,377.60, 121,456.29 and 76,063.19 is: 113,524.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,377.60 : 121,456.29 = 76,063.19 : x
  2. Step 2: Convert to fraction form
    81,377.60/121,456.29 = 76,063.19/x
  3. Step 3: Cross multiply
    81,377.60x = 121,456.29 × 76,063.19
  4. Step 4: Simplify right side
    81,377.60x = 9,238,352,862.97
  5. Step 5: Solve for x
    x = 9,238,352,862.97/81,377.60
  6. Step 6: Final answer
    x = 113,524.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.