Home / 143,167.70-197,571.74-79,505.50

Finding the Fourth Proportional to 143,167.70, 197,571.74 and 79,505.50

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Solution

The fourth proportional to 143,167.70, 197,571.74 and 79,505.50 is: 109,717.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,167.70 : 197,571.74 = 79,505.50 : x
  2. Step 2: Convert to fraction form
    143,167.70/197,571.74 = 79,505.50/x
  3. Step 3: Cross multiply
    143,167.70x = 197,571.74 × 79,505.50
  4. Step 4: Simplify right side
    143,167.70x = 15,708,039,577.04
  5. Step 5: Solve for x
    x = 15,708,039,577.04/143,167.70
  6. Step 6: Final answer
    x = 109,717.77

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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.