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Finding the Fourth Proportional to 124.07, 170.09 and 118.20

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Solution

The fourth proportional to 124.07, 170.09 and 118.20 is: 162.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.07 : 170.09 = 118.20 : x
  2. Step 2: Convert to fraction form
    124.07/170.09 = 118.20/x
  3. Step 3: Cross multiply
    124.07x = 170.09 × 118.20
  4. Step 4: Simplify right side
    124.07x = 20,104.64
  5. Step 5: Solve for x
    x = 20,104.64/124.07
  6. Step 6: Final answer
    x = 162.04

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.