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Finding the Fourth Proportional to 104,158.62, 143,631.39 and 89,101.11

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Solution

The fourth proportional to 104,158.62, 143,631.39 and 89,101.11 is: 122,867.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,158.62 : 143,631.39 = 89,101.11 : x
  2. Step 2: Convert to fraction form
    104,158.62/143,631.39 = 89,101.11/x
  3. Step 3: Cross multiply
    104,158.62x = 143,631.39 × 89,101.11
  4. Step 4: Simplify right side
    104,158.62x = 12,797,716,279.84
  5. Step 5: Solve for x
    x = 12,797,716,279.84/104,158.62
  6. Step 6: Final answer
    x = 122,867.57

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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.