Home / 98,748.44-147,778.14-80,771.30

Finding the Fourth Proportional to 98,748.44, 147,778.14 and 80,771.30

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Solution

The fourth proportional to 98,748.44, 147,778.14 and 80,771.30 is: 120,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,748.44 : 147,778.14 = 80,771.30 : x
  2. Step 2: Convert to fraction form
    98,748.44/147,778.14 = 80,771.30/x
  3. Step 3: Cross multiply
    98,748.44x = 147,778.14 × 80,771.30
  4. Step 4: Simplify right side
    98,748.44x = 11,936,232,479.38
  5. Step 5: Solve for x
    x = 11,936,232,479.38/98,748.44
  6. Step 6: Final answer
    x = 120,875.15

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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.