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Finding the Fourth Proportional to 101.94, 141.62 and 100.98

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Solution

The fourth proportional to 101.94, 141.62 and 100.98 is: 140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.94 : 141.62 = 100.98 : x
  2. Step 2: Convert to fraction form
    101.94/141.62 = 100.98/x
  3. Step 3: Cross multiply
    101.94x = 141.62 × 100.98
  4. Step 4: Simplify right side
    101.94x = 14,300.28
  5. Step 5: Solve for x
    x = 14,300.28/101.94
  6. Step 6: Final answer
    x = 140.29

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.