Home / 109,819.30-164,911.14-68,528.74

Finding the Fourth Proportional to 109,819.30, 164,911.14 and 68,528.74

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Solution

The fourth proportional to 109,819.30, 164,911.14 and 68,528.74 is: 102,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,819.30 : 164,911.14 = 68,528.74 : x
  2. Step 2: Convert to fraction form
    109,819.30/164,911.14 = 68,528.74/x
  3. Step 3: Cross multiply
    109,819.30x = 164,911.14 × 68,528.74
  4. Step 4: Simplify right side
    109,819.30x = 11,301,152,636.16
  5. Step 5: Solve for x
    x = 11,301,152,636.16/109,819.30
  6. Step 6: Final answer
    x = 102,906.80

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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.