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Finding the Fourth Proportional to 113.32, 157.10 and 107.16

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Solution

The fourth proportional to 113.32, 157.10 and 107.16 is: 148.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.32 : 157.10 = 107.16 : x
  2. Step 2: Convert to fraction form
    113.32/157.10 = 107.16/x
  3. Step 3: Cross multiply
    113.32x = 157.10 × 107.16
  4. Step 4: Simplify right side
    113.32x = 16,834.30
  5. Step 5: Solve for x
    x = 16,834.30/113.32
  6. Step 6: Final answer
    x = 148.56

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.