Home / 128,044.40-192,066.60-80,697.20

Finding the Fourth Proportional to 128,044.40, 192,066.60 and 80,697.20

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Solution

The fourth proportional to 128,044.40, 192,066.60 and 80,697.20 is: 121,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,044.40 : 192,066.60 = 80,697.20 : x
  2. Step 2: Convert to fraction form
    128,044.40/192,066.60 = 80,697.20/x
  3. Step 3: Cross multiply
    128,044.40x = 192,066.60 × 80,697.20
  4. Step 4: Simplify right side
    128,044.40x = 15,499,236,833.52
  5. Step 5: Solve for x
    x = 15,499,236,833.52/128,044.40
  6. Step 6: Final answer
    x = 121,045.80

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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.