Home / 86,140.24-129,069.60-82,859.76

Finding the Fourth Proportional to 86,140.24, 129,069.60 and 82,859.76

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Solution

The fourth proportional to 86,140.24, 129,069.60 and 82,859.76 is: 124,154.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,140.24 : 129,069.60 = 82,859.76 : x
  2. Step 2: Convert to fraction form
    86,140.24/129,069.60 = 82,859.76/x
  3. Step 3: Cross multiply
    86,140.24x = 129,069.60 × 82,859.76
  4. Step 4: Simplify right side
    86,140.24x = 10,694,676,079.30
  5. Step 5: Solve for x
    x = 10,694,676,079.30/86,140.24
  6. Step 6: Final answer
    x = 124,154.24

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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.