Home / 81,375.60-121,453.31-76,061.19

Finding the Fourth Proportional to 81,375.60, 121,453.31 and 76,061.19

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Solution

The fourth proportional to 81,375.60, 121,453.31 and 76,061.19 is: 113,521.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,375.60 : 121,453.31 = 76,061.19 : x
  2. Step 2: Convert to fraction form
    81,375.60/121,453.31 = 76,061.19/x
  3. Step 3: Cross multiply
    81,375.60x = 121,453.31 × 76,061.19
  4. Step 4: Simplify right side
    81,375.60x = 9,237,883,288.04
  5. Step 5: Solve for x
    x = 9,237,883,288.04/81,375.60
  6. Step 6: Final answer
    x = 113,521.54

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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.