Home / 84,401.20-126,601.80-77,512.15

Finding the Fourth Proportional to 84,401.20, 126,601.80 and 77,512.15

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Solution

The fourth proportional to 84,401.20, 126,601.80 and 77,512.15 is: 116,268.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,401.20 : 126,601.80 = 77,512.15 : x
  2. Step 2: Convert to fraction form
    84,401.20/126,601.80 = 77,512.15/x
  3. Step 3: Cross multiply
    84,401.20x = 126,601.80 × 77,512.15
  4. Step 4: Simplify right side
    84,401.20x = 9,813,177,711.87
  5. Step 5: Solve for x
    x = 9,813,177,711.87/84,401.20
  6. Step 6: Final answer
    x = 116,268.23

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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.