Home / 142,579.53-196,757.37-78,915.96

Finding the Fourth Proportional to 142,579.53, 196,757.37 and 78,915.96

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Solution

The fourth proportional to 142,579.53, 196,757.37 and 78,915.96 is: 108,902.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,579.53 : 196,757.37 = 78,915.96 : x
  2. Step 2: Convert to fraction form
    142,579.53/196,757.37 = 78,915.96/x
  3. Step 3: Cross multiply
    142,579.53x = 196,757.37 × 78,915.96
  4. Step 4: Simplify right side
    142,579.53x = 15,527,296,740.63
  5. Step 5: Solve for x
    x = 15,527,296,740.63/142,579.53
  6. Step 6: Final answer
    x = 108,902.71

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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.