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Finding the Fourth Proportional to 93.96, 130.02 and 89.96

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Solution

The fourth proportional to 93.96, 130.02 and 89.96 is: 124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.96 : 130.02 = 89.96 : x
  2. Step 2: Convert to fraction form
    93.96/130.02 = 89.96/x
  3. Step 3: Cross multiply
    93.96x = 130.02 × 89.96
  4. Step 4: Simplify right side
    93.96x = 11,696.60
  5. Step 5: Solve for x
    x = 11,696.60/93.96
  6. Step 6: Final answer
    x = 124.48

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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.