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Finding the Fourth Proportional to 93.01, 139.37 and 86.26

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Solution

The fourth proportional to 93.01, 139.37 and 86.26 is: 129.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.01 : 139.37 = 86.26 : x
  2. Step 2: Convert to fraction form
    93.01/139.37 = 86.26/x
  3. Step 3: Cross multiply
    93.01x = 139.37 × 86.26
  4. Step 4: Simplify right side
    93.01x = 12,022.06
  5. Step 5: Solve for x
    x = 12,022.06/93.01
  6. Step 6: Final answer
    x = 129.26

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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.