Home / 86,569.40-129,854.10-80,154.20

Finding the Fourth Proportional to 86,569.40, 129,854.10 and 80,154.20

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Solution

The fourth proportional to 86,569.40, 129,854.10 and 80,154.20 is: 120,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,569.40 : 129,854.10 = 80,154.20 : x
  2. Step 2: Convert to fraction form
    86,569.40/129,854.10 = 80,154.20/x
  3. Step 3: Cross multiply
    86,569.40x = 129,854.10 × 80,154.20
  4. Step 4: Simplify right side
    86,569.40x = 10,408,351,502.22
  5. Step 5: Solve for x
    x = 10,408,351,502.22/86,569.40
  6. Step 6: Final answer
    x = 120,231.30

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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.