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Finding the Fourth Proportional to 140.33, 193.47 and 98.93

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Solution

The fourth proportional to 140.33, 193.47 and 98.93 is: 136.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.33 : 193.47 = 98.93 : x
  2. Step 2: Convert to fraction form
    140.33/193.47 = 98.93/x
  3. Step 3: Cross multiply
    140.33x = 193.47 × 98.93
  4. Step 4: Simplify right side
    140.33x = 19,139.99
  5. Step 5: Solve for x
    x = 19,139.99/140.33
  6. Step 6: Final answer
    x = 136.39

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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.