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Finding the Fourth Proportional to 136,673.80, 205,010.70 and 132,081.10

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Solution

The fourth proportional to 136,673.80, 205,010.70 and 132,081.10 is: 198,121.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,673.80 : 205,010.70 = 132,081.10 : x
  2. Step 2: Convert to fraction form
    136,673.80/205,010.70 = 132,081.10/x
  3. Step 3: Cross multiply
    136,673.80x = 205,010.70 × 132,081.10
  4. Step 4: Simplify right side
    136,673.80x = 27,078,038,767.77
  5. Step 5: Solve for x
    x = 27,078,038,767.77/136,673.80
  6. Step 6: Final answer
    x = 198,121.65

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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.