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Finding the Fourth Proportional to 106.48, 147.06 and 92.59

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Solution

The fourth proportional to 106.48, 147.06 and 92.59 is: 127.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.48 : 147.06 = 92.59 : x
  2. Step 2: Convert to fraction form
    106.48/147.06 = 92.59/x
  3. Step 3: Cross multiply
    106.48x = 147.06 × 92.59
  4. Step 4: Simplify right side
    106.48x = 13,616.29
  5. Step 5: Solve for x
    x = 13,616.29/106.48
  6. Step 6: Final answer
    x = 127.88

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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.