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Finding the Fourth Proportional to 89,424.85, 134,012.52 and 67,212.22

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Solution

The fourth proportional to 89,424.85, 134,012.52 and 67,212.22 is: 100,724.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,424.85 : 134,012.52 = 67,212.22 : x
  2. Step 2: Convert to fraction form
    89,424.85/134,012.52 = 67,212.22/x
  3. Step 3: Cross multiply
    89,424.85x = 134,012.52 × 67,212.22
  4. Step 4: Simplify right side
    89,424.85x = 9,007,278,976.99
  5. Step 5: Solve for x
    x = 9,007,278,976.99/89,424.85
  6. Step 6: Final answer
    x = 100,724.56

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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.