Home / 121,158.06-181,724.13-42,273.78

Finding the Fourth Proportional to 121,158.06, 181,724.13 and 42,273.78

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Solution

The fourth proportional to 121,158.06, 181,724.13 and 42,273.78 is: 63,406.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,158.06 : 181,724.13 = 42,273.78 : x
  2. Step 2: Convert to fraction form
    121,158.06/181,724.13 = 42,273.78/x
  3. Step 3: Cross multiply
    121,158.06x = 181,724.13 × 42,273.78
  4. Step 4: Simplify right side
    121,158.06x = 7,682,165,892.31
  5. Step 5: Solve for x
    x = 7,682,165,892.31/121,158.06
  6. Step 6: Final answer
    x = 63,406.15

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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.