Home / 126,074.40-188,990.10-72,711.60

Finding the Fourth Proportional to 126,074.40, 188,990.10 and 72,711.60

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Solution

The fourth proportional to 126,074.40, 188,990.10 and 72,711.60 is: 108,997.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,074.40 : 188,990.10 = 72,711.60 : x
  2. Step 2: Convert to fraction form
    126,074.40/188,990.10 = 72,711.60/x
  3. Step 3: Cross multiply
    126,074.40x = 188,990.10 × 72,711.60
  4. Step 4: Simplify right side
    126,074.40x = 13,741,772,555.16
  5. Step 5: Solve for x
    x = 13,741,772,555.16/126,074.40
  6. Step 6: Final answer
    x = 108,997.33

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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.