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Finding the Fourth Proportional to 107.95, 148.75 and 88.51

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Solution

The fourth proportional to 107.95, 148.75 and 88.51 is: 121.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.95 : 148.75 = 88.51 : x
  2. Step 2: Convert to fraction form
    107.95/148.75 = 88.51/x
  3. Step 3: Cross multiply
    107.95x = 148.75 × 88.51
  4. Step 4: Simplify right side
    107.95x = 13,165.86
  5. Step 5: Solve for x
    x = 13,165.86/107.95
  6. Step 6: Final answer
    x = 121.96

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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.