Home / 109,344.20-164,081.10-72,011.30

Finding the Fourth Proportional to 109,344.20, 164,081.10 and 72,011.30

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Solution

The fourth proportional to 109,344.20, 164,081.10 and 72,011.30 is: 108,059.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,344.20 : 164,081.10 = 72,011.30 : x
  2. Step 2: Convert to fraction form
    109,344.20/164,081.10 = 72,011.30/x
  3. Step 3: Cross multiply
    109,344.20x = 164,081.10 × 72,011.30
  4. Step 4: Simplify right side
    109,344.20x = 11,815,693,316.43
  5. Step 5: Solve for x
    x = 11,815,693,316.43/109,344.20
  6. Step 6: Final answer
    x = 108,059.63

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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.