Home / 83,070.72-124,014.32-80,154.56

Finding the Fourth Proportional to 83,070.72, 124,014.32 and 80,154.56

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Solution

The fourth proportional to 83,070.72, 124,014.32 and 80,154.56 is: 119,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,070.72 : 124,014.32 = 80,154.56 : x
  2. Step 2: Convert to fraction form
    83,070.72/124,014.32 = 80,154.56/x
  3. Step 3: Cross multiply
    83,070.72x = 124,014.32 × 80,154.56
  4. Step 4: Simplify right side
    83,070.72x = 9,940,313,253.30
  5. Step 5: Solve for x
    x = 9,940,313,253.30/83,070.72
  6. Step 6: Final answer
    x = 119,660.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.