Home / 121,539.60-181,991.16-97,720.56

Finding the Fourth Proportional to 121,539.60, 181,991.16 and 97,720.56

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Solution

The fourth proportional to 121,539.60, 181,991.16 and 97,720.56 is: 146,324.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,539.60 : 181,991.16 = 97,720.56 : x
  2. Step 2: Convert to fraction form
    121,539.60/181,991.16 = 97,720.56/x
  3. Step 3: Cross multiply
    121,539.60x = 181,991.16 × 97,720.56
  4. Step 4: Simplify right side
    121,539.60x = 17,784,278,070.25
  5. Step 5: Solve for x
    x = 17,784,278,070.25/121,539.60
  6. Step 6: Final answer
    x = 146,324.97

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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.