Home / 98,966.20-148,449.30-76,847.80

Finding the Fourth Proportional to 98,966.20, 148,449.30 and 76,847.80

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Solution

The fourth proportional to 98,966.20, 148,449.30 and 76,847.80 is: 115,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,966.20 : 148,449.30 = 76,847.80 : x
  2. Step 2: Convert to fraction form
    98,966.20/148,449.30 = 76,847.80/x
  3. Step 3: Cross multiply
    98,966.20x = 148,449.30 × 76,847.80
  4. Step 4: Simplify right side
    98,966.20x = 11,408,002,116.54
  5. Step 5: Solve for x
    x = 11,408,002,116.54/98,966.20
  6. Step 6: Final answer
    x = 115,271.70

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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.