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Finding the Fourth Proportional to 160.20, 240.30 and 83.13

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Solution

The fourth proportional to 160.20, 240.30 and 83.13 is: 124.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.20 : 240.30 = 83.13 : x
  2. Step 2: Convert to fraction form
    160.20/240.30 = 83.13/x
  3. Step 3: Cross multiply
    160.20x = 240.30 × 83.13
  4. Step 4: Simplify right side
    160.20x = 19,976.14
  5. Step 5: Solve for x
    x = 19,976.14/160.20
  6. Step 6: Final answer
    x = 124.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.