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Finding the Fourth Proportional to 150.12, 206.98 and 137.16

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Solution

The fourth proportional to 150.12, 206.98 and 137.16 is: 189.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.12 : 206.98 = 137.16 : x
  2. Step 2: Convert to fraction form
    150.12/206.98 = 137.16/x
  3. Step 3: Cross multiply
    150.12x = 206.98 × 137.16
  4. Step 4: Simplify right side
    150.12x = 28,389.03
  5. Step 5: Solve for x
    x = 28,389.03/150.12
  6. Step 6: Final answer
    x = 189.11

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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.