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Finding the Fourth Proportional to 93.81, 130.08 and 88.59

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Solution

The fourth proportional to 93.81, 130.08 and 88.59 is: 122.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.81 : 130.08 = 88.59 : x
  2. Step 2: Convert to fraction form
    93.81/130.08 = 88.59/x
  3. Step 3: Cross multiply
    93.81x = 130.08 × 88.59
  4. Step 4: Simplify right side
    93.81x = 11,523.79
  5. Step 5: Solve for x
    x = 11,523.79/93.81
  6. Step 6: Final answer
    x = 122.84

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.