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Finding the Fourth Proportional to 73.16, 100.90 and 60.20

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Solution

The fourth proportional to 73.16, 100.90 and 60.20 is: 83.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.16 : 100.90 = 60.20 : x
  2. Step 2: Convert to fraction form
    73.16/100.90 = 60.20/x
  3. Step 3: Cross multiply
    73.16x = 100.90 × 60.20
  4. Step 4: Simplify right side
    73.16x = 6,074.18
  5. Step 5: Solve for x
    x = 6,074.18/73.16
  6. Step 6: Final answer
    x = 83.03

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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.