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Finding the Fourth Proportional to 134.84, 185.94 and 103.70

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Solution

The fourth proportional to 134.84, 185.94 and 103.70 is: 143.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.84 : 185.94 = 103.70 : x
  2. Step 2: Convert to fraction form
    134.84/185.94 = 103.70/x
  3. Step 3: Cross multiply
    134.84x = 185.94 × 103.70
  4. Step 4: Simplify right side
    134.84x = 19,281.98
  5. Step 5: Solve for x
    x = 19,281.98/134.84
  6. Step 6: Final answer
    x = 143.00

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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.