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Finding the Fourth Proportional to 96.51, 143.89 and 92.43

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Solution

The fourth proportional to 96.51, 143.89 and 92.43 is: 137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.51 : 143.89 = 92.43 : x
  2. Step 2: Convert to fraction form
    96.51/143.89 = 92.43/x
  3. Step 3: Cross multiply
    96.51x = 143.89 × 92.43
  4. Step 4: Simplify right side
    96.51x = 13,298.81
  5. Step 5: Solve for x
    x = 13,298.81/96.51
  6. Step 6: Final answer
    x = 137.80

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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.