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Finding the Fourth Proportional to 142.02, 195.87 and 108.76

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Solution

The fourth proportional to 142.02, 195.87 and 108.76 is: 150.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142.02 : 195.87 = 108.76 : x
  2. Step 2: Convert to fraction form
    142.02/195.87 = 108.76/x
  3. Step 3: Cross multiply
    142.02x = 195.87 × 108.76
  4. Step 4: Simplify right side
    142.02x = 21,302.82
  5. Step 5: Solve for x
    x = 21,302.82/142.02
  6. Step 6: Final answer
    x = 150.00

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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.