Home / 86,351.43-129,326.40-83,358.21

Finding the Fourth Proportional to 86,351.43, 129,326.40 and 83,358.21

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Solution

The fourth proportional to 86,351.43, 129,326.40 and 83,358.21 is: 124,843.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,351.43 : 129,326.40 = 83,358.21 : x
  2. Step 2: Convert to fraction form
    86,351.43/129,326.40 = 83,358.21/x
  3. Step 3: Cross multiply
    86,351.43x = 129,326.40 × 83,358.21
  4. Step 4: Simplify right side
    86,351.43x = 10,780,417,209.74
  5. Step 5: Solve for x
    x = 10,780,417,209.74/86,351.43
  6. Step 6: Final answer
    x = 124,843.53

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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.