Home / 128,449.24-177,266.82-71,850.76

Finding the Fourth Proportional to 128,449.24, 177,266.82 and 71,850.76

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Solution

The fourth proportional to 128,449.24, 177,266.82 and 71,850.76 is: 99,157.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,449.24 : 177,266.82 = 71,850.76 : x
  2. Step 2: Convert to fraction form
    128,449.24/177,266.82 = 71,850.76/x
  3. Step 3: Cross multiply
    128,449.24x = 177,266.82 × 71,850.76
  4. Step 4: Simplify right side
    128,449.24x = 12,736,755,739.78
  5. Step 5: Solve for x
    x = 12,736,755,739.78/128,449.24
  6. Step 6: Final answer
    x = 99,157.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.