Home / 128,119.60-192,179.40-126,151.30

Finding the Fourth Proportional to 128,119.60, 192,179.40 and 126,151.30

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Solution

The fourth proportional to 128,119.60, 192,179.40 and 126,151.30 is: 189,226.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,119.60 : 192,179.40 = 126,151.30 : x
  2. Step 2: Convert to fraction form
    128,119.60/192,179.40 = 126,151.30/x
  3. Step 3: Cross multiply
    128,119.60x = 192,179.40 × 126,151.30
  4. Step 4: Simplify right side
    128,119.60x = 24,243,681,143.22
  5. Step 5: Solve for x
    x = 24,243,681,143.22/128,119.60
  6. Step 6: Final answer
    x = 189,226.95

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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.