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Finding the Fourth Proportional to 99.51, 136.52 and 93.30

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Solution

The fourth proportional to 99.51, 136.52 and 93.30 is: 128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.51 : 136.52 = 93.30 : x
  2. Step 2: Convert to fraction form
    99.51/136.52 = 93.30/x
  3. Step 3: Cross multiply
    99.51x = 136.52 × 93.30
  4. Step 4: Simplify right side
    99.51x = 12,736.85
  5. Step 5: Solve for x
    x = 12,736.85/99.51
  6. Step 6: Final answer
    x = 128.00

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.