Home / 109,675.20-164,512.80-108,638.40

Finding the Fourth Proportional to 109,675.20, 164,512.80 and 108,638.40

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Solution

The fourth proportional to 109,675.20, 164,512.80 and 108,638.40 is: 162,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,675.20 : 164,512.80 = 108,638.40 : x
  2. Step 2: Convert to fraction form
    109,675.20/164,512.80 = 108,638.40/x
  3. Step 3: Cross multiply
    109,675.20x = 164,512.80 × 108,638.40
  4. Step 4: Simplify right side
    109,675.20x = 17,872,407,371.52
  5. Step 5: Solve for x
    x = 17,872,407,371.52/109,675.20
  6. Step 6: Final answer
    x = 162,957.60

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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.