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Finding the Fourth Proportional to 168,912, 253,371.24 and 63,780.48

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Solution

The fourth proportional to 168,912, 253,371.24 and 63,780.48 is: 95,671.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,912 : 253,371.24 = 63,780.48 : x
  2. Step 2: Convert to fraction form
    168,912/253,371.24 = 63,780.48/x
  3. Step 3: Cross multiply
    168,912x = 253,371.24 × 63,780.48
  4. Step 4: Simplify right side
    168,912x = 16,160,139,305.40
  5. Step 5: Solve for x
    x = 16,160,139,305.40/168,912
  6. Step 6: Final answer
    x = 95,671.94

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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.