Home / 109,113.80-163,638.30-42,515.60

Finding the Fourth Proportional to 109,113.80, 163,638.30 and 42,515.60

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Solution

The fourth proportional to 109,113.80, 163,638.30 and 42,515.60 is: 63,760.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,113.80 : 163,638.30 = 42,515.60 : x
  2. Step 2: Convert to fraction form
    109,113.80/163,638.30 = 42,515.60/x
  3. Step 3: Cross multiply
    109,113.80x = 163,638.30 × 42,515.60
  4. Step 4: Simplify right side
    109,113.80x = 6,957,180,507.48
  5. Step 5: Solve for x
    x = 6,957,180,507.48/109,113.80
  6. Step 6: Final answer
    x = 63,760.78

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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.