Home / 116,720.43-161,074.94-66,419.43

Finding the Fourth Proportional to 116,720.43, 161,074.94 and 66,419.43

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Solution

The fourth proportional to 116,720.43, 161,074.94 and 66,419.43 is: 91,659.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,720.43 : 161,074.94 = 66,419.43 : x
  2. Step 2: Convert to fraction form
    116,720.43/161,074.94 = 66,419.43/x
  3. Step 3: Cross multiply
    116,720.43x = 161,074.94 × 66,419.43
  4. Step 4: Simplify right side
    116,720.43x = 10,698,505,369.99
  5. Step 5: Solve for x
    x = 10,698,505,369.99/116,720.43
  6. Step 6: Final answer
    x = 91,659.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.