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Finding the Fourth Proportional to 100,609.70, 150,914.55 and 89,237.30

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Solution

The fourth proportional to 100,609.70, 150,914.55 and 89,237.30 is: 133,855.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,609.70 : 150,914.55 = 89,237.30 : x
  2. Step 2: Convert to fraction form
    100,609.70/150,914.55 = 89,237.30/x
  3. Step 3: Cross multiply
    100,609.70x = 150,914.55 × 89,237.30
  4. Step 4: Simplify right side
    100,609.70x = 13,467,206,972.72
  5. Step 5: Solve for x
    x = 13,467,206,972.72/100,609.70
  6. Step 6: Final answer
    x = 133,855.95

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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.