Home / 124,979.40-187,469.10-80,656.20

Finding the Fourth Proportional to 124,979.40, 187,469.10 and 80,656.20

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Solution

The fourth proportional to 124,979.40, 187,469.10 and 80,656.20 is: 120,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,979.40 : 187,469.10 = 80,656.20 : x
  2. Step 2: Convert to fraction form
    124,979.40/187,469.10 = 80,656.20/x
  3. Step 3: Cross multiply
    124,979.40x = 187,469.10 × 80,656.20
  4. Step 4: Simplify right side
    124,979.40x = 15,120,545,223.42
  5. Step 5: Solve for x
    x = 15,120,545,223.42/124,979.40
  6. Step 6: Final answer
    x = 120,984.30

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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.