Home / 122,109.28-168,512.49-79,643.44

Finding the Fourth Proportional to 122,109.28, 168,512.49 and 79,643.44

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Solution

The fourth proportional to 122,109.28, 168,512.49 and 79,643.44 is: 109,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,109.28 : 168,512.49 = 79,643.44 : x
  2. Step 2: Convert to fraction form
    122,109.28/168,512.49 = 79,643.44/x
  3. Step 3: Cross multiply
    122,109.28x = 168,512.49 × 79,643.44
  4. Step 4: Simplify right side
    122,109.28x = 13,420,914,386.57
  5. Step 5: Solve for x
    x = 13,420,914,386.57/122,109.28
  6. Step 6: Final answer
    x = 109,909.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.