Home / 109,029.20-163,543.80-71,704.40

Finding the Fourth Proportional to 109,029.20, 163,543.80 and 71,704.40

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Solution

The fourth proportional to 109,029.20, 163,543.80 and 71,704.40 is: 107,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,029.20 : 163,543.80 = 71,704.40 : x
  2. Step 2: Convert to fraction form
    109,029.20/163,543.80 = 71,704.40/x
  3. Step 3: Cross multiply
    109,029.20x = 163,543.80 × 71,704.40
  4. Step 4: Simplify right side
    109,029.20x = 11,726,810,052.72
  5. Step 5: Solve for x
    x = 11,726,810,052.72/109,029.20
  6. Step 6: Final answer
    x = 107,556.60

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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.