Home / 91,353.12-125,997.76-78,627.52

Finding the Fourth Proportional to 91,353.12, 125,997.76 and 78,627.52

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Solution

The fourth proportional to 91,353.12, 125,997.76 and 78,627.52 is: 108,446.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,353.12 : 125,997.76 = 78,627.52 : x
  2. Step 2: Convert to fraction form
    91,353.12/125,997.76 = 78,627.52/x
  3. Step 3: Cross multiply
    91,353.12x = 125,997.76 × 78,627.52
  4. Step 4: Simplify right side
    91,353.12x = 9,906,891,394.36
  5. Step 5: Solve for x
    x = 9,906,891,394.36/91,353.12
  6. Step 6: Final answer
    x = 108,446.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.