Home / 125,423.80-187,844.10-85,766.20

Finding the Fourth Proportional to 125,423.80, 187,844.10 and 85,766.20

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Solution

The fourth proportional to 125,423.80, 187,844.10 and 85,766.20 is: 128,449.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,423.80 : 187,844.10 = 85,766.20 : x
  2. Step 2: Convert to fraction form
    125,423.80/187,844.10 = 85,766.20/x
  3. Step 3: Cross multiply
    125,423.80x = 187,844.10 × 85,766.20
  4. Step 4: Simplify right side
    125,423.80x = 16,110,674,649.42
  5. Step 5: Solve for x
    x = 16,110,674,649.42/125,423.80
  6. Step 6: Final answer
    x = 128,449.90

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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.