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Finding the Fourth Proportional to 136,103.49, 187,827.15 and 75,676.68

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Solution

The fourth proportional to 136,103.49, 187,827.15 and 75,676.68 is: 104,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,103.49 : 187,827.15 = 75,676.68 : x
  2. Step 2: Convert to fraction form
    136,103.49/187,827.15 = 75,676.68/x
  3. Step 3: Cross multiply
    136,103.49x = 187,827.15 × 75,676.68
  4. Step 4: Simplify right side
    136,103.49x = 14,214,135,409.65
  5. Step 5: Solve for x
    x = 14,214,135,409.65/136,103.49
  6. Step 6: Final answer
    x = 104,436.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.