Home / 117,414.09-161,993.07-66,421.89

Finding the Fourth Proportional to 117,414.09, 161,993.07 and 66,421.89

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Solution

The fourth proportional to 117,414.09, 161,993.07 and 66,421.89 is: 91,640.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,414.09 : 161,993.07 = 66,421.89 : x
  2. Step 2: Convert to fraction form
    117,414.09/161,993.07 = 66,421.89/x
  3. Step 3: Cross multiply
    117,414.09x = 161,993.07 × 66,421.89
  4. Step 4: Simplify right side
    117,414.09x = 10,759,885,876.30
  5. Step 5: Solve for x
    x = 10,759,885,876.30/117,414.09
  6. Step 6: Final answer
    x = 91,640.50

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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.