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Finding the Fourth Proportional to 93.75, 139.55 and 89.33

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Solution

The fourth proportional to 93.75, 139.55 and 89.33 is: 132.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.75 : 139.55 = 89.33 : x
  2. Step 2: Convert to fraction form
    93.75/139.55 = 89.33/x
  3. Step 3: Cross multiply
    93.75x = 139.55 × 89.33
  4. Step 4: Simplify right side
    93.75x = 12,465.53
  5. Step 5: Solve for x
    x = 12,465.53/93.75
  6. Step 6: Final answer
    x = 132.97

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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.