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Finding the Fourth Proportional to 125.70, 173.32 and 79.01

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Solution

The fourth proportional to 125.70, 173.32 and 79.01 is: 108.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.70 : 173.32 = 79.01 : x
  2. Step 2: Convert to fraction form
    125.70/173.32 = 79.01/x
  3. Step 3: Cross multiply
    125.70x = 173.32 × 79.01
  4. Step 4: Simplify right side
    125.70x = 13,694.31
  5. Step 5: Solve for x
    x = 13,694.31/125.70
  6. Step 6: Final answer
    x = 108.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.