Home / 136,920.20-205,034.70-89,918.60

Finding the Fourth Proportional to 136,920.20, 205,034.70 and 89,918.60

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Solution

The fourth proportional to 136,920.20, 205,034.70 and 89,918.60 is: 134,650.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,920.20 : 205,034.70 = 89,918.60 : x
  2. Step 2: Convert to fraction form
    136,920.20/205,034.70 = 89,918.60/x
  3. Step 3: Cross multiply
    136,920.20x = 205,034.70 × 89,918.60
  4. Step 4: Simplify right side
    136,920.20x = 18,436,433,175.42
  5. Step 5: Solve for x
    x = 18,436,433,175.42/136,920.20
  6. Step 6: Final answer
    x = 134,650.94

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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.