Home / 126,021.32-173,670.18-90,149.05

Finding the Fourth Proportional to 126,021.32, 173,670.18 and 90,149.05

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Solution

The fourth proportional to 126,021.32, 173,670.18 and 90,149.05 is: 124,234.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,021.32 : 173,670.18 = 90,149.05 : x
  2. Step 2: Convert to fraction form
    126,021.32/173,670.18 = 90,149.05/x
  3. Step 3: Cross multiply
    126,021.32x = 173,670.18 × 90,149.05
  4. Step 4: Simplify right side
    126,021.32x = 15,656,201,619.36
  5. Step 5: Solve for x
    x = 15,656,201,619.36/126,021.32
  6. Step 6: Final answer
    x = 124,234.55

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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.