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Finding the Fourth Proportional to 168,662.20, 253,187.70 and 102,177.40

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Solution

The fourth proportional to 168,662.20, 253,187.70 and 102,177.40 is: 153,383.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,662.20 : 253,187.70 = 102,177.40 : x
  2. Step 2: Convert to fraction form
    168,662.20/253,187.70 = 102,177.40/x
  3. Step 3: Cross multiply
    168,662.20x = 253,187.70 × 102,177.40
  4. Step 4: Simplify right side
    168,662.20x = 25,870,060,897.98
  5. Step 5: Solve for x
    x = 25,870,060,897.98/168,662.20
  6. Step 6: Final answer
    x = 153,383.87

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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.