Home / 109,311.62-163,967.45-84,388.05

Finding the Fourth Proportional to 109,311.62, 163,967.45 and 84,388.05

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Solution

The fourth proportional to 109,311.62, 163,967.45 and 84,388.05 is: 126,582.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,311.62 : 163,967.45 = 84,388.05 : x
  2. Step 2: Convert to fraction form
    109,311.62/163,967.45 = 84,388.05/x
  3. Step 3: Cross multiply
    109,311.62x = 163,967.45 × 84,388.05
  4. Step 4: Simplify right side
    109,311.62x = 13,836,892,947.03
  5. Step 5: Solve for x
    x = 13,836,892,947.03/109,311.62
  6. Step 6: Final answer
    x = 126,582.09

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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.