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Finding the Fourth Proportional to 93.01, 139.62 and 76.09

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Solution

The fourth proportional to 93.01, 139.62 and 76.09 is: 114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.01 : 139.62 = 76.09 : x
  2. Step 2: Convert to fraction form
    93.01/139.62 = 76.09/x
  3. Step 3: Cross multiply
    93.01x = 139.62 × 76.09
  4. Step 4: Simplify right side
    93.01x = 10,623.69
  5. Step 5: Solve for x
    x = 10,623.69/93.01
  6. Step 6: Final answer
    x = 114.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.