Home / 142,579.03-196,756.68-78,915.46

Finding the Fourth Proportional to 142,579.03, 196,756.68 and 78,915.46

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Solution

The fourth proportional to 142,579.03, 196,756.68 and 78,915.46 is: 108,902.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,579.03 : 196,756.68 = 78,915.46 : x
  2. Step 2: Convert to fraction form
    142,579.03/196,756.68 = 78,915.46/x
  3. Step 3: Cross multiply
    142,579.03x = 196,756.68 × 78,915.46
  4. Step 4: Simplify right side
    142,579.03x = 15,527,143,910.27
  5. Step 5: Solve for x
    x = 15,527,143,910.27/142,579.03
  6. Step 6: Final answer
    x = 108,902.02

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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.