Home / 121,229.40-181,844.10-68,741.40

Finding the Fourth Proportional to 121,229.40, 181,844.10 and 68,741.40

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Solution

The fourth proportional to 121,229.40, 181,844.10 and 68,741.40 is: 103,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,229.40 : 181,844.10 = 68,741.40 : x
  2. Step 2: Convert to fraction form
    121,229.40/181,844.10 = 68,741.40/x
  3. Step 3: Cross multiply
    121,229.40x = 181,844.10 × 68,741.40
  4. Step 4: Simplify right side
    121,229.40x = 12,500,218,015.74
  5. Step 5: Solve for x
    x = 12,500,218,015.74/121,229.40
  6. Step 6: Final answer
    x = 103,112.10

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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.