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Finding the Fourth Proportional to 147.04, 203.12 and 139.84

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Solution

The fourth proportional to 147.04, 203.12 and 139.84 is: 193.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.04 : 203.12 = 139.84 : x
  2. Step 2: Convert to fraction form
    147.04/203.12 = 139.84/x
  3. Step 3: Cross multiply
    147.04x = 203.12 × 139.84
  4. Step 4: Simplify right side
    147.04x = 28,404.30
  5. Step 5: Solve for x
    x = 28,404.30/147.04
  6. Step 6: Final answer
    x = 193.17

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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.