Home / 121,040.10-181,560.15-71,144.10

Finding the Fourth Proportional to 121,040.10, 181,560.15 and 71,144.10

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Solution

The fourth proportional to 121,040.10, 181,560.15 and 71,144.10 is: 106,716.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,040.10 : 181,560.15 = 71,144.10 : x
  2. Step 2: Convert to fraction form
    121,040.10/181,560.15 = 71,144.10/x
  3. Step 3: Cross multiply
    121,040.10x = 181,560.15 × 71,144.10
  4. Step 4: Simplify right side
    121,040.10x = 12,916,933,467.62
  5. Step 5: Solve for x
    x = 12,916,933,467.62/121,040.10
  6. Step 6: Final answer
    x = 106,716.15

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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.