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Finding the Fourth Proportional to 99.54, 150.06 and 93.15

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Solution

The fourth proportional to 99.54, 150.06 and 93.15 is: 140.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.54 : 150.06 = 93.15 : x
  2. Step 2: Convert to fraction form
    99.54/150.06 = 93.15/x
  3. Step 3: Cross multiply
    99.54x = 150.06 × 93.15
  4. Step 4: Simplify right side
    99.54x = 13,978.09
  5. Step 5: Solve for x
    x = 13,978.09/99.54
  6. Step 6: Final answer
    x = 140.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.