Home / 121,150.60-181,704.30-76,697.80

Finding the Fourth Proportional to 121,150.60, 181,704.30 and 76,697.80

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Solution

The fourth proportional to 121,150.60, 181,704.30 and 76,697.80 is: 115,033.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,150.60 : 181,704.30 = 76,697.80 : x
  2. Step 2: Convert to fraction form
    121,150.60/181,704.30 = 76,697.80/x
  3. Step 3: Cross multiply
    121,150.60x = 181,704.30 × 76,697.80
  4. Step 4: Simplify right side
    121,150.60x = 13,936,320,060.54
  5. Step 5: Solve for x
    x = 13,936,320,060.54/121,150.60
  6. Step 6: Final answer
    x = 115,033.03

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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.