Home / 128,330.20-192,495.30-45,232.60

Finding the Fourth Proportional to 128,330.20, 192,495.30 and 45,232.60

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Solution

The fourth proportional to 128,330.20, 192,495.30 and 45,232.60 is: 67,848.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,330.20 : 192,495.30 = 45,232.60 : x
  2. Step 2: Convert to fraction form
    128,330.20/192,495.30 = 45,232.60/x
  3. Step 3: Cross multiply
    128,330.20x = 192,495.30 × 45,232.60
  4. Step 4: Simplify right side
    128,330.20x = 8,707,062,906.78
  5. Step 5: Solve for x
    x = 8,707,062,906.78/128,330.20
  6. Step 6: Final answer
    x = 67,848.90

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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.