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Finding the Fourth Proportional to 105.40, 157.01 and 96.04

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Solution

The fourth proportional to 105.40, 157.01 and 96.04 is: 143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.40 : 157.01 = 96.04 : x
  2. Step 2: Convert to fraction form
    105.40/157.01 = 96.04/x
  3. Step 3: Cross multiply
    105.40x = 157.01 × 96.04
  4. Step 4: Simplify right side
    105.40x = 15,079.24
  5. Step 5: Solve for x
    x = 15,079.24/105.40
  6. Step 6: Final answer
    x = 143.07

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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.