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Finding the Fourth Proportional to 93.66, 130.07 and 92.76

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Solution

The fourth proportional to 93.66, 130.07 and 92.76 is: 128.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.66 : 130.07 = 92.76 : x
  2. Step 2: Convert to fraction form
    93.66/130.07 = 92.76/x
  3. Step 3: Cross multiply
    93.66x = 130.07 × 92.76
  4. Step 4: Simplify right side
    93.66x = 12,064.83
  5. Step 5: Solve for x
    x = 12,064.83/93.66
  6. Step 6: Final answer
    x = 128.82

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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.