Home / 121,234.20-181,851.26-38,128.20

Finding the Fourth Proportional to 121,234.20, 181,851.26 and 38,128.20

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Solution

The fourth proportional to 121,234.20, 181,851.26 and 38,128.20 is: 57,192.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,234.20 : 181,851.26 = 38,128.20 : x
  2. Step 2: Convert to fraction form
    121,234.20/181,851.26 = 38,128.20/x
  3. Step 3: Cross multiply
    121,234.20x = 181,851.26 × 38,128.20
  4. Step 4: Simplify right side
    121,234.20x = 6,933,661,020.89
  5. Step 5: Solve for x
    x = 6,933,661,020.89/121,234.20
  6. Step 6: Final answer
    x = 57,192.29

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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.