Home / 98,724.44-147,742.14-80,747.30

Finding the Fourth Proportional to 98,724.44, 147,742.14 and 80,747.30

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Solution

The fourth proportional to 98,724.44, 147,742.14 and 80,747.30 is: 120,839.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,724.44 : 147,742.14 = 80,747.30 : x
  2. Step 2: Convert to fraction form
    98,724.44/147,742.14 = 80,747.30/x
  3. Step 3: Cross multiply
    98,724.44x = 147,742.14 × 80,747.30
  4. Step 4: Simplify right side
    98,724.44x = 11,929,778,901.22
  5. Step 5: Solve for x
    x = 11,929,778,901.22/98,724.44
  6. Step 6: Final answer
    x = 120,839.17

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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.