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Finding the Fourth Proportional to 93.35, 139.06 and 89.23

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Solution

The fourth proportional to 93.35, 139.06 and 89.23 is: 132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.35 : 139.06 = 89.23 : x
  2. Step 2: Convert to fraction form
    93.35/139.06 = 89.23/x
  3. Step 3: Cross multiply
    93.35x = 139.06 × 89.23
  4. Step 4: Simplify right side
    93.35x = 12,408.32
  5. Step 5: Solve for x
    x = 12,408.32/93.35
  6. Step 6: Final answer
    x = 132.92

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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.