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Finding the Fourth Proportional to 106.84, 147.52 and 67.51

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Solution

The fourth proportional to 106.84, 147.52 and 67.51 is: 93.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.84 : 147.52 = 67.51 : x
  2. Step 2: Convert to fraction form
    106.84/147.52 = 67.51/x
  3. Step 3: Cross multiply
    106.84x = 147.52 × 67.51
  4. Step 4: Simplify right side
    106.84x = 9,959.08
  5. Step 5: Solve for x
    x = 9,959.08/106.84
  6. Step 6: Final answer
    x = 93.21

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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.