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Finding the Fourth Proportional to 100,605.70, 150,908.55 and 89,233.30

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Solution

The fourth proportional to 100,605.70, 150,908.55 and 89,233.30 is: 133,849.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,605.70 : 150,908.55 = 89,233.30 : x
  2. Step 2: Convert to fraction form
    100,605.70/150,908.55 = 89,233.30/x
  3. Step 3: Cross multiply
    100,605.70x = 150,908.55 × 89,233.30
  4. Step 4: Simplify right side
    100,605.70x = 13,466,067,914.72
  5. Step 5: Solve for x
    x = 13,466,067,914.72/100,605.70
  6. Step 6: Final answer
    x = 133,849.95

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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.