Home / 121,108.20-181,662.30-110,221.80

Finding the Fourth Proportional to 121,108.20, 181,662.30 and 110,221.80

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Solution

The fourth proportional to 121,108.20, 181,662.30 and 110,221.80 is: 165,332.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,108.20 : 181,662.30 = 110,221.80 : x
  2. Step 2: Convert to fraction form
    121,108.20/181,662.30 = 110,221.80/x
  3. Step 3: Cross multiply
    121,108.20x = 181,662.30 × 110,221.80
  4. Step 4: Simplify right side
    121,108.20x = 20,023,145,698.14
  5. Step 5: Solve for x
    x = 20,023,145,698.14/121,108.20
  6. Step 6: Final answer
    x = 165,332.70

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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.