Home / 128,630.24-192,964.80-45,517.76

Finding the Fourth Proportional to 128,630.24, 192,964.80 and 45,517.76

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Solution

The fourth proportional to 128,630.24, 192,964.80 and 45,517.76 is: 68,283.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,630.24 : 192,964.80 = 45,517.76 : x
  2. Step 2: Convert to fraction form
    128,630.24/192,964.80 = 45,517.76/x
  3. Step 3: Cross multiply
    128,630.24x = 192,964.80 × 45,517.76
  4. Step 4: Simplify right side
    128,630.24x = 8,783,325,454.85
  5. Step 5: Solve for x
    x = 8,783,325,454.85/128,630.24
  6. Step 6: Final answer
    x = 68,283.52

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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.