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Finding the Fourth Proportional to 124.04, 185.29 and 121.64

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Solution

The fourth proportional to 124.04, 185.29 and 121.64 is: 181.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.04 : 185.29 = 121.64 : x
  2. Step 2: Convert to fraction form
    124.04/185.29 = 121.64/x
  3. Step 3: Cross multiply
    124.04x = 185.29 × 121.64
  4. Step 4: Simplify right side
    124.04x = 22,538.68
  5. Step 5: Solve for x
    x = 22,538.68/124.04
  6. Step 6: Final answer
    x = 181.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.