Home / 121,135.40-181,711.20-41,172.20

Finding the Fourth Proportional to 121,135.40, 181,711.20 and 41,172.20

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Solution

The fourth proportional to 121,135.40, 181,711.20 and 41,172.20 is: 61,761.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,135.40 : 181,711.20 = 41,172.20 : x
  2. Step 2: Convert to fraction form
    121,135.40/181,711.20 = 41,172.20/x
  3. Step 3: Cross multiply
    121,135.40x = 181,711.20 × 41,172.20
  4. Step 4: Simplify right side
    121,135.40x = 7,481,449,868.64
  5. Step 5: Solve for x
    x = 7,481,449,868.64/121,135.40
  6. Step 6: Final answer
    x = 61,761.05

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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.