Home / 121,147.76-181,857.96-51,086

Finding the Fourth Proportional to 121,147.76, 181,857.96 and 51,086

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Solution

The fourth proportional to 121,147.76, 181,857.96 and 51,086 is: 76,686.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,147.76 : 181,857.96 = 51,086 : x
  2. Step 2: Convert to fraction form
    121,147.76/181,857.96 = 51,086/x
  3. Step 3: Cross multiply
    121,147.76x = 181,857.96 × 51,086
  4. Step 4: Simplify right side
    121,147.76x = 9,290,395,744.56
  5. Step 5: Solve for x
    x = 9,290,395,744.56/121,147.76
  6. Step 6: Final answer
    x = 76,686.48

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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.