Home / 121,138.40-181,715.70-41,175.20

Finding the Fourth Proportional to 121,138.40, 181,715.70 and 41,175.20

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Solution

The fourth proportional to 121,138.40, 181,715.70 and 41,175.20 is: 61,765.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,138.40 : 181,715.70 = 41,175.20 : x
  2. Step 2: Convert to fraction form
    121,138.40/181,715.70 = 41,175.20/x
  3. Step 3: Cross multiply
    121,138.40x = 181,715.70 × 41,175.20
  4. Step 4: Simplify right side
    121,138.40x = 7,482,180,290.64
  5. Step 5: Solve for x
    x = 7,482,180,290.64/121,138.40
  6. Step 6: Final answer
    x = 61,765.55

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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.