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Finding the Fourth Proportional to 147.06, 202.97 and 84.90

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Solution

The fourth proportional to 147.06, 202.97 and 84.90 is: 117.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.06 : 202.97 = 84.90 : x
  2. Step 2: Convert to fraction form
    147.06/202.97 = 84.90/x
  3. Step 3: Cross multiply
    147.06x = 202.97 × 84.90
  4. Step 4: Simplify right side
    147.06x = 17,231.73
  5. Step 5: Solve for x
    x = 17,231.73/147.06
  6. Step 6: Final answer
    x = 117.17

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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.