Home / 109,819.62-164,418.12-72,266.76

Finding the Fourth Proportional to 109,819.62, 164,418.12 and 72,266.76

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Solution

The fourth proportional to 109,819.62, 164,418.12 and 72,266.76 is: 108,195.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,819.62 : 164,418.12 = 72,266.76 : x
  2. Step 2: Convert to fraction form
    109,819.62/164,418.12 = 72,266.76/x
  3. Step 3: Cross multiply
    109,819.62x = 164,418.12 × 72,266.76
  4. Step 4: Simplify right side
    109,819.62x = 11,881,964,817.69
  5. Step 5: Solve for x
    x = 11,881,964,817.69/109,819.62
  6. Step 6: Final answer
    x = 108,195.28

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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.