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Finding the Fourth Proportional to 136,876.66, 205,314.98 and 43,382.41

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Solution

The fourth proportional to 136,876.66, 205,314.98 and 43,382.41 is: 65,073.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,876.66 : 205,314.98 = 43,382.41 : x
  2. Step 2: Convert to fraction form
    136,876.66/205,314.98 = 43,382.41/x
  3. Step 3: Cross multiply
    136,876.66x = 205,314.98 × 43,382.41
  4. Step 4: Simplify right side
    136,876.66x = 8,907,058,641.50
  5. Step 5: Solve for x
    x = 8,907,058,641.50/136,876.66
  6. Step 6: Final answer
    x = 65,073.61

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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.