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Finding the Fourth Proportional to 114.11, 157.45 and 72.59

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Solution

The fourth proportional to 114.11, 157.45 and 72.59 is: 100.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.11 : 157.45 = 72.59 : x
  2. Step 2: Convert to fraction form
    114.11/157.45 = 72.59/x
  3. Step 3: Cross multiply
    114.11x = 157.45 × 72.59
  4. Step 4: Simplify right side
    114.11x = 11,428.51
  5. Step 5: Solve for x
    x = 11,428.51/114.11
  6. Step 6: Final answer
    x = 100.16

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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.