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Finding the Fourth Proportional to 109,354.32, 163,432.28 and 79,834.32

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Solution

The fourth proportional to 109,354.32, 163,432.28 and 79,834.32 is: 119,314.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,354.32 : 163,432.28 = 79,834.32 : x
  2. Step 2: Convert to fraction form
    109,354.32/163,432.28 = 79,834.32/x
  3. Step 3: Cross multiply
    109,354.32x = 163,432.28 × 79,834.32
  4. Step 4: Simplify right side
    109,354.32x = 13,047,504,540.68
  5. Step 5: Solve for x
    x = 13,047,504,540.68/109,354.32
  6. Step 6: Final answer
    x = 119,314.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.