Home / 128,218.20-192,307.84-45,092.76

Finding the Fourth Proportional to 128,218.20, 192,307.84 and 45,092.76

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Solution

The fourth proportional to 128,218.20, 192,307.84 and 45,092.76 is: 67,632.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,218.20 : 192,307.84 = 45,092.76 : x
  2. Step 2: Convert to fraction form
    128,218.20/192,307.84 = 45,092.76/x
  3. Step 3: Cross multiply
    128,218.20x = 192,307.84 × 45,092.76
  4. Step 4: Simplify right side
    128,218.20x = 8,671,691,275.24
  5. Step 5: Solve for x
    x = 8,671,691,275.24/128,218.20
  6. Step 6: Final answer
    x = 67,632.30

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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.