Home / 101,622.20-152,378.31-80,696.86

Finding the Fourth Proportional to 101,622.20, 152,378.31 and 80,696.86

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Solution

The fourth proportional to 101,622.20, 152,378.31 and 80,696.86 is: 121,001.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,622.20 : 152,378.31 = 80,696.86 : x
  2. Step 2: Convert to fraction form
    101,622.20/152,378.31 = 80,696.86/x
  3. Step 3: Cross multiply
    101,622.20x = 152,378.31 × 80,696.86
  4. Step 4: Simplify right side
    101,622.20x = 12,296,451,070.77
  5. Step 5: Solve for x
    x = 12,296,451,070.77/101,622.20
  6. Step 6: Final answer
    x = 121,001.63

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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.