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Finding the Fourth Proportional to 140.07, 193.36 and 108.91

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Solution

The fourth proportional to 140.07, 193.36 and 108.91 is: 150.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.07 : 193.36 = 108.91 : x
  2. Step 2: Convert to fraction form
    140.07/193.36 = 108.91/x
  3. Step 3: Cross multiply
    140.07x = 193.36 × 108.91
  4. Step 4: Simplify right side
    140.07x = 21,058.84
  5. Step 5: Solve for x
    x = 21,058.84/140.07
  6. Step 6: Final answer
    x = 150.35

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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.