Home / 117,212.48-161,764.80-66,919.04

Finding the Fourth Proportional to 117,212.48, 161,764.80 and 66,919.04

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Solution

The fourth proportional to 117,212.48, 161,764.80 and 66,919.04 is: 92,354.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,212.48 : 161,764.80 = 66,919.04 : x
  2. Step 2: Convert to fraction form
    117,212.48/161,764.80 = 66,919.04/x
  3. Step 3: Cross multiply
    117,212.48x = 161,764.80 × 66,919.04
  4. Step 4: Simplify right side
    117,212.48x = 10,825,145,121.79
  5. Step 5: Solve for x
    x = 10,825,145,121.79/117,212.48
  6. Step 6: Final answer
    x = 92,354.89

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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.