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Finding the Fourth Proportional to 100,605.80, 150,908.70 and 67,363.40

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Solution

The fourth proportional to 100,605.80, 150,908.70 and 67,363.40 is: 101,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,605.80 : 150,908.70 = 67,363.40 : x
  2. Step 2: Convert to fraction form
    100,605.80/150,908.70 = 67,363.40/x
  3. Step 3: Cross multiply
    100,605.80x = 150,908.70 × 67,363.40
  4. Step 4: Simplify right side
    100,605.80x = 10,165,723,121.58
  5. Step 5: Solve for x
    x = 10,165,723,121.58/100,605.80
  6. Step 6: Final answer
    x = 101,045.10

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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.