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Finding the Fourth Proportional to 117,041.88, 161,517.69 and 66,065.34

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Solution

The fourth proportional to 117,041.88, 161,517.69 and 66,065.34 is: 91,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,041.88 : 161,517.69 = 66,065.34 : x
  2. Step 2: Convert to fraction form
    117,041.88/161,517.69 = 66,065.34/x
  3. Step 3: Cross multiply
    117,041.88x = 161,517.69 × 66,065.34
  4. Step 4: Simplify right side
    117,041.88x = 10,670,721,105.86
  5. Step 5: Solve for x
    x = 10,670,721,105.86/117,041.88
  6. Step 6: Final answer
    x = 91,170.11

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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.