Home / 142,719.84-196,964.46-79,063.56

Finding the Fourth Proportional to 142,719.84, 196,964.46 and 79,063.56

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Solution

The fourth proportional to 142,719.84, 196,964.46 and 79,063.56 is: 109,113.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,719.84 : 196,964.46 = 79,063.56 : x
  2. Step 2: Convert to fraction form
    142,719.84/196,964.46 = 79,063.56/x
  3. Step 3: Cross multiply
    142,719.84x = 196,964.46 × 79,063.56
  4. Step 4: Simplify right side
    142,719.84x = 15,572,711,401.08
  5. Step 5: Solve for x
    x = 15,572,711,401.08/142,719.84
  6. Step 6: Final answer
    x = 109,113.85

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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.