Home / 98,724.69-147,742.52-80,747.55

Finding the Fourth Proportional to 98,724.69, 147,742.52 and 80,747.55

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Solution

The fourth proportional to 98,724.69, 147,742.52 and 80,747.55 is: 120,839.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,724.69 : 147,742.52 = 80,747.55 : x
  2. Step 2: Convert to fraction form
    98,724.69/147,742.52 = 80,747.55/x
  3. Step 3: Cross multiply
    98,724.69x = 147,742.52 × 80,747.55
  4. Step 4: Simplify right side
    98,724.69x = 11,929,846,117.09
  5. Step 5: Solve for x
    x = 11,929,846,117.09/98,724.69
  6. Step 6: Final answer
    x = 120,839.54

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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.