Home / 106,236.20-159,440.70-102,780.20

Finding the Fourth Proportional to 106,236.20, 159,440.70 and 102,780.20

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Solution

The fourth proportional to 106,236.20, 159,440.70 and 102,780.20 is: 154,253.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,236.20 : 159,440.70 = 102,780.20 : x
  2. Step 2: Convert to fraction form
    106,236.20/159,440.70 = 102,780.20/x
  3. Step 3: Cross multiply
    106,236.20x = 159,440.70 × 102,780.20
  4. Step 4: Simplify right side
    106,236.20x = 16,387,347,034.14
  5. Step 5: Solve for x
    x = 16,387,347,034.14/106,236.20
  6. Step 6: Final answer
    x = 154,253.89

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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.