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Finding the Fourth Proportional to 89,438.99, 133,529.78 and 68,267.61

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Solution

The fourth proportional to 89,438.99, 133,529.78 and 68,267.61 is: 101,921.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,438.99 : 133,529.78 = 68,267.61 : x
  2. Step 2: Convert to fraction form
    89,438.99/133,529.78 = 68,267.61/x
  3. Step 3: Cross multiply
    89,438.99x = 133,529.78 × 68,267.61
  4. Step 4: Simplify right side
    89,438.99x = 9,115,759,115.09
  5. Step 5: Solve for x
    x = 9,115,759,115.09/89,438.99
  6. Step 6: Final answer
    x = 101,921.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.