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Finding the Fourth Proportional to 111,672.47, 167,539.97 and 45,159.30

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Solution

The fourth proportional to 111,672.47, 167,539.97 and 45,159.30 is: 67,751.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,672.47 : 167,539.97 = 45,159.30 : x
  2. Step 2: Convert to fraction form
    111,672.47/167,539.97 = 45,159.30/x
  3. Step 3: Cross multiply
    111,672.47x = 167,539.97 × 45,159.30
  4. Step 4: Simplify right side
    111,672.47x = 7,565,987,880.12
  5. Step 5: Solve for x
    x = 7,565,987,880.12/111,672.47
  6. Step 6: Final answer
    x = 67,751.59

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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.