Home / 185,972.40-278,958.60-111,322.80

Finding the Fourth Proportional to 185,972.40, 278,958.60 and 111,322.80

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Solution

The fourth proportional to 185,972.40, 278,958.60 and 111,322.80 is: 166,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,972.40 : 278,958.60 = 111,322.80 : x
  2. Step 2: Convert to fraction form
    185,972.40/278,958.60 = 111,322.80/x
  3. Step 3: Cross multiply
    185,972.40x = 278,958.60 × 111,322.80
  4. Step 4: Simplify right side
    185,972.40x = 31,054,452,436.08
  5. Step 5: Solve for x
    x = 31,054,452,436.08/185,972.40
  6. Step 6: Final answer
    x = 166,984.20

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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.