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Finding the Fourth Proportional to 114.06, 157.38 and 72.62

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Solution

The fourth proportional to 114.06, 157.38 and 72.62 is: 100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.06 : 157.38 = 72.62 : x
  2. Step 2: Convert to fraction form
    114.06/157.38 = 72.62/x
  3. Step 3: Cross multiply
    114.06x = 157.38 × 72.62
  4. Step 4: Simplify right side
    114.06x = 11,428.94
  5. Step 5: Solve for x
    x = 11,428.94/114.06
  6. Step 6: Final answer
    x = 100.20

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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.