Home / 81,218.75-121,814.15-22,059.18

Finding the Fourth Proportional to 81,218.75, 121,814.15 and 22,059.18

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Solution

The fourth proportional to 81,218.75, 121,814.15 and 22,059.18 is: 33,084.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,218.75 : 121,814.15 = 22,059.18 : x
  2. Step 2: Convert to fraction form
    81,218.75/121,814.15 = 22,059.18/x
  3. Step 3: Cross multiply
    81,218.75x = 121,814.15 × 22,059.18
  4. Step 4: Simplify right side
    81,218.75x = 2,687,120,151.10
  5. Step 5: Solve for x
    x = 2,687,120,151.10/81,218.75
  6. Step 6: Final answer
    x = 33,084.98

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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.