Home / 125,321.40-187,982.10-80,998.20

Finding the Fourth Proportional to 125,321.40, 187,982.10 and 80,998.20

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Solution

The fourth proportional to 125,321.40, 187,982.10 and 80,998.20 is: 121,497.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,321.40 : 187,982.10 = 80,998.20 : x
  2. Step 2: Convert to fraction form
    125,321.40/187,982.10 = 80,998.20/x
  3. Step 3: Cross multiply
    125,321.40x = 187,982.10 × 80,998.20
  4. Step 4: Simplify right side
    125,321.40x = 15,226,211,732.22
  5. Step 5: Solve for x
    x = 15,226,211,732.22/125,321.40
  6. Step 6: Final answer
    x = 121,497.30

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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.