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Finding the Fourth Proportional to 178,979.60, 269,052.60 and 126,750.80

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Solution

The fourth proportional to 178,979.60, 269,052.60 and 126,750.80 is: 190,539.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,979.60 : 269,052.60 = 126,750.80 : x
  2. Step 2: Convert to fraction form
    178,979.60/269,052.60 = 126,750.80/x
  3. Step 3: Cross multiply
    178,979.60x = 269,052.60 × 126,750.80
  4. Step 4: Simplify right side
    178,979.60x = 34,102,632,292.08
  5. Step 5: Solve for x
    x = 34,102,632,292.08/178,979.60
  6. Step 6: Final answer
    x = 190,539.21

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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.