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Finding the Fourth Proportional to 109,279.80, 163,934.30 and 38,194.20

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Solution

The fourth proportional to 109,279.80, 163,934.30 and 38,194.20 is: 57,296.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,279.80 : 163,934.30 = 38,194.20 : x
  2. Step 2: Convert to fraction form
    109,279.80/163,934.30 = 38,194.20/x
  3. Step 3: Cross multiply
    109,279.80x = 163,934.30 × 38,194.20
  4. Step 4: Simplify right side
    109,279.80x = 6,261,339,441.06
  5. Step 5: Solve for x
    x = 6,261,339,441.06/109,279.80
  6. Step 6: Final answer
    x = 57,296.40

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1.5x scale

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.