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Finding the Fourth Proportional to 177,115.60, 265,705.80 and 71,945.20

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Solution

The fourth proportional to 177,115.60, 265,705.80 and 71,945.20 is: 107,930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,115.60 : 265,705.80 = 71,945.20 : x
  2. Step 2: Convert to fraction form
    177,115.60/265,705.80 = 71,945.20/x
  3. Step 3: Cross multiply
    177,115.60x = 265,705.80 × 71,945.20
  4. Step 4: Simplify right side
    177,115.60x = 19,116,256,922.16
  5. Step 5: Solve for x
    x = 19,116,256,922.16/177,115.60
  6. Step 6: Final answer
    x = 107,930.96

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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.