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Finding the Fourth Proportional to 140.83, 194.48 and 89.17

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Solution

The fourth proportional to 140.83, 194.48 and 89.17 is: 123.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.83 : 194.48 = 89.17 : x
  2. Step 2: Convert to fraction form
    140.83/194.48 = 89.17/x
  3. Step 3: Cross multiply
    140.83x = 194.48 × 89.17
  4. Step 4: Simplify right side
    140.83x = 17,341.78
  5. Step 5: Solve for x
    x = 17,341.78/140.83
  6. Step 6: Final answer
    x = 123.14

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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.