Home / 86,651.20-129,976.80-83,370.70

Finding the Fourth Proportional to 86,651.20, 129,976.80 and 83,370.70

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Solution

The fourth proportional to 86,651.20, 129,976.80 and 83,370.70 is: 125,056.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,651.20 : 129,976.80 = 83,370.70 : x
  2. Step 2: Convert to fraction form
    86,651.20/129,976.80 = 83,370.70/x
  3. Step 3: Cross multiply
    86,651.20x = 129,976.80 × 83,370.70
  4. Step 4: Simplify right side
    86,651.20x = 10,836,256,799.76
  5. Step 5: Solve for x
    x = 10,836,256,799.76/86,651.20
  6. Step 6: Final answer
    x = 125,056.05

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Similar ratio
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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.