Home / 128,022.20-191,774.10-88,623.80

Finding the Fourth Proportional to 128,022.20, 191,774.10 and 88,623.80

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Solution

The fourth proportional to 128,022.20, 191,774.10 and 88,623.80 is: 132,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,022.20 : 191,774.10 = 88,623.80 : x
  2. Step 2: Convert to fraction form
    128,022.20/191,774.10 = 88,623.80/x
  3. Step 3: Cross multiply
    128,022.20x = 191,774.10 × 88,623.80
  4. Step 4: Simplify right side
    128,022.20x = 16,995,749,483.58
  5. Step 5: Solve for x
    x = 16,995,749,483.58/128,022.20
  6. Step 6: Final answer
    x = 132,756.27

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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.