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Finding the Fourth Proportional to 98,747.94, 147,777.39 and 80,770.80

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Solution

The fourth proportional to 98,747.94, 147,777.39 and 80,770.80 is: 120,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,747.94 : 147,777.39 = 80,770.80 : x
  2. Step 2: Convert to fraction form
    98,747.94/147,777.39 = 80,770.80/x
  3. Step 3: Cross multiply
    98,747.94x = 147,777.39 × 80,770.80
  4. Step 4: Simplify right side
    98,747.94x = 11,936,098,012.21
  5. Step 5: Solve for x
    x = 11,936,098,012.21/98,747.94
  6. Step 6: Final answer
    x = 120,874.40

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1.5x scale

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.