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Finding the Fourth Proportional to 119,073, 164,320.74 and 66,081

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Solution

The fourth proportional to 119,073, 164,320.74 and 66,081 is: 91,191.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,073 : 164,320.74 = 66,081 : x
  2. Step 2: Convert to fraction form
    119,073/164,320.74 = 66,081/x
  3. Step 3: Cross multiply
    119,073x = 164,320.74 × 66,081
  4. Step 4: Simplify right side
    119,073x = 10,858,478,819.94
  5. Step 5: Solve for x
    x = 10,858,478,819.94/119,073
  6. Step 6: Final answer
    x = 91,191.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.