Home / 142,723.62-196,948.67-79,056

Finding the Fourth Proportional to 142,723.62, 196,948.67 and 79,056

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Solution

The fourth proportional to 142,723.62, 196,948.67 and 79,056 is: 109,091.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,723.62 : 196,948.67 = 79,056 : x
  2. Step 2: Convert to fraction form
    142,723.62/196,948.67 = 79,056/x
  3. Step 3: Cross multiply
    142,723.62x = 196,948.67 × 79,056
  4. Step 4: Simplify right side
    142,723.62x = 15,569,973,660.24
  5. Step 5: Solve for x
    x = 15,569,973,660.24/142,723.62
  6. Step 6: Final answer
    x = 109,091.78

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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.