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Finding the Fourth Proportional to 91.50, 126.23 and 73.10

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Solution

The fourth proportional to 91.50, 126.23 and 73.10 is: 100.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.50 : 126.23 = 73.10 : x
  2. Step 2: Convert to fraction form
    91.50/126.23 = 73.10/x
  3. Step 3: Cross multiply
    91.50x = 126.23 × 73.10
  4. Step 4: Simplify right side
    91.50x = 9,227.36
  5. Step 5: Solve for x
    x = 9,227.36/91.50
  6. Step 6: Final answer
    x = 100.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.