Home / 109,469.13-163,991.26-71,915.23

Finding the Fourth Proportional to 109,469.13, 163,991.26 and 71,915.23

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Solution

The fourth proportional to 109,469.13, 163,991.26 and 71,915.23 is: 107,733.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,469.13 : 163,991.26 = 71,915.23 : x
  2. Step 2: Convert to fraction form
    109,469.13/163,991.26 = 71,915.23/x
  3. Step 3: Cross multiply
    109,469.13x = 163,991.26 × 71,915.23
  4. Step 4: Simplify right side
    109,469.13x = 11,793,469,180.89
  5. Step 5: Solve for x
    x = 11,793,469,180.89/109,469.13
  6. Step 6: Final answer
    x = 107,733.29

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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.