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Finding the Fourth Proportional to 168,755.40, 253,133.10 and 105,769.80

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Solution

The fourth proportional to 168,755.40, 253,133.10 and 105,769.80 is: 158,654.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,755.40 : 253,133.10 = 105,769.80 : x
  2. Step 2: Convert to fraction form
    168,755.40/253,133.10 = 105,769.80/x
  3. Step 3: Cross multiply
    168,755.40x = 253,133.10 × 105,769.80
  4. Step 4: Simplify right side
    168,755.40x = 26,773,837,360.38
  5. Step 5: Solve for x
    x = 26,773,837,360.38/168,755.40
  6. Step 6: Final answer
    x = 158,654.70

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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.