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Finding the Fourth Proportional to 99,519.40, 149,279.10 and 29,399.40

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Solution

The fourth proportional to 99,519.40, 149,279.10 and 29,399.40 is: 44,099.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,519.40 : 149,279.10 = 29,399.40 : x
  2. Step 2: Convert to fraction form
    99,519.40/149,279.10 = 29,399.40/x
  3. Step 3: Cross multiply
    99,519.40x = 149,279.10 × 29,399.40
  4. Step 4: Simplify right side
    99,519.40x = 4,388,715,972.54
  5. Step 5: Solve for x
    x = 4,388,715,972.54/99,519.40
  6. Step 6: Final answer
    x = 44,099.10

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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.