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Finding the Fourth Proportional to 93.64, 139.66 and 84.46

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Solution

The fourth proportional to 93.64, 139.66 and 84.46 is: 125.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.64 : 139.66 = 84.46 : x
  2. Step 2: Convert to fraction form
    93.64/139.66 = 84.46/x
  3. Step 3: Cross multiply
    93.64x = 139.66 × 84.46
  4. Step 4: Simplify right side
    93.64x = 11,795.68
  5. Step 5: Solve for x
    x = 11,795.68/93.64
  6. Step 6: Final answer
    x = 125.97

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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.