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Finding the Fourth Proportional to 93.33, 139.86 and 91.35

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Solution

The fourth proportional to 93.33, 139.86 and 91.35 is: 136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.33 : 139.86 = 91.35 : x
  2. Step 2: Convert to fraction form
    93.33/139.86 = 91.35/x
  3. Step 3: Cross multiply
    93.33x = 139.86 × 91.35
  4. Step 4: Simplify right side
    93.33x = 12,776.21
  5. Step 5: Solve for x
    x = 12,776.21/93.33
  6. Step 6: Final answer
    x = 136.89

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