Home / 121,133.60-181,441.20-108,000.80

Finding the Fourth Proportional to 121,133.60, 181,441.20 and 108,000.80

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Solution

The fourth proportional to 121,133.60, 181,441.20 and 108,000.80 is: 161,770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,133.60 : 181,441.20 = 108,000.80 : x
  2. Step 2: Convert to fraction form
    121,133.60/181,441.20 = 108,000.80/x
  3. Step 3: Cross multiply
    121,133.60x = 181,441.20 × 108,000.80
  4. Step 4: Simplify right side
    121,133.60x = 19,595,794,752.96
  5. Step 5: Solve for x
    x = 19,595,794,752.96/121,133.60
  6. Step 6: Final answer
    x = 161,770.10

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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.