Home / 128,110.20-191,906.10-88,711.80

Finding the Fourth Proportional to 128,110.20, 191,906.10 and 88,711.80

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Solution

The fourth proportional to 128,110.20, 191,906.10 and 88,711.80 is: 132,888.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,110.20 : 191,906.10 = 88,711.80 : x
  2. Step 2: Convert to fraction form
    128,110.20/191,906.10 = 88,711.80/x
  3. Step 3: Cross multiply
    128,110.20x = 191,906.10 × 88,711.80
  4. Step 4: Simplify right side
    128,110.20x = 17,024,335,561.98
  5. Step 5: Solve for x
    x = 17,024,335,561.98/128,110.20
  6. Step 6: Final answer
    x = 132,888.21

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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.