Home / 170,131.28-255,354.63-85,950.70

Finding the Fourth Proportional to 170,131.28, 255,354.63 and 85,950.70

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Solution

The fourth proportional to 170,131.28, 255,354.63 and 85,950.70 is: 129,005.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,131.28 : 255,354.63 = 85,950.70 : x
  2. Step 2: Convert to fraction form
    170,131.28/255,354.63 = 85,950.70/x
  3. Step 3: Cross multiply
    170,131.28x = 255,354.63 × 85,950.70
  4. Step 4: Simplify right side
    170,131.28x = 21,947,909,879.66
  5. Step 5: Solve for x
    x = 21,947,909,879.66/170,131.28
  6. Step 6: Final answer
    x = 129,005.73

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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.