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Finding the Fourth Proportional to 169,984.60, 254,976.90 and 76,672.60

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Solution

The fourth proportional to 169,984.60, 254,976.90 and 76,672.60 is: 115,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,984.60 : 254,976.90 = 76,672.60 : x
  2. Step 2: Convert to fraction form
    169,984.60/254,976.90 = 76,672.60/x
  3. Step 3: Cross multiply
    169,984.60x = 254,976.90 × 76,672.60
  4. Step 4: Simplify right side
    169,984.60x = 19,549,741,862.94
  5. Step 5: Solve for x
    x = 19,549,741,862.94/169,984.60
  6. Step 6: Final answer
    x = 115,008.90

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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.