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Finding the Fourth Proportional to 109.04, 162.61 and 104.99

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Solution

The fourth proportional to 109.04, 162.61 and 104.99 is: 156.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.04 : 162.61 = 104.99 : x
  2. Step 2: Convert to fraction form
    109.04/162.61 = 104.99/x
  3. Step 3: Cross multiply
    109.04x = 162.61 × 104.99
  4. Step 4: Simplify right side
    109.04x = 17,072.42
  5. Step 5: Solve for x
    x = 17,072.42/109.04
  6. Step 6: Final answer
    x = 156.57

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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.