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Finding the Fourth Proportional to 89,316.78, 133,850.07 and 67,116

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Solution

The fourth proportional to 89,316.78, 133,850.07 and 67,116 is: 100,580.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,316.78 : 133,850.07 = 67,116 : x
  2. Step 2: Convert to fraction form
    89,316.78/133,850.07 = 67,116/x
  3. Step 3: Cross multiply
    89,316.78x = 133,850.07 × 67,116
  4. Step 4: Simplify right side
    89,316.78x = 8,983,481,298.12
  5. Step 5: Solve for x
    x = 8,983,481,298.12/89,316.78
  6. Step 6: Final answer
    x = 100,580.00

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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.