Home / 109,151.20-163,508.10-73,721.80

Finding the Fourth Proportional to 109,151.20, 163,508.10 and 73,721.80

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Solution

The fourth proportional to 109,151.20, 163,508.10 and 73,721.80 is: 110,434.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,151.20 : 163,508.10 = 73,721.80 : x
  2. Step 2: Convert to fraction form
    109,151.20/163,508.10 = 73,721.80/x
  3. Step 3: Cross multiply
    109,151.20x = 163,508.10 × 73,721.80
  4. Step 4: Simplify right side
    109,151.20x = 12,054,111,446.58
  5. Step 5: Solve for x
    x = 12,054,111,446.58/109,151.20
  6. Step 6: Final answer
    x = 110,434.99

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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.