Home / 121,343.60-181,972.20-54,815.60

Finding the Fourth Proportional to 121,343.60, 181,972.20 and 54,815.60

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Solution

The fourth proportional to 121,343.60, 181,972.20 and 54,815.60 is: 82,203.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,343.60 : 181,972.20 = 54,815.60 : x
  2. Step 2: Convert to fraction form
    121,343.60/181,972.20 = 54,815.60/x
  3. Step 3: Cross multiply
    121,343.60x = 181,972.20 × 54,815.60
  4. Step 4: Simplify right side
    121,343.60x = 9,974,915,326.32
  5. Step 5: Solve for x
    x = 9,974,915,326.32/121,343.60
  6. Step 6: Final answer
    x = 82,203.88

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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.