Home / 105,819.72-158,729.56-82,463.64

Finding the Fourth Proportional to 105,819.72, 158,729.56 and 82,463.64

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Solution

The fourth proportional to 105,819.72, 158,729.56 and 82,463.64 is: 123,695.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,819.72 : 158,729.56 = 82,463.64 : x
  2. Step 2: Convert to fraction form
    105,819.72/158,729.56 = 82,463.64/x
  3. Step 3: Cross multiply
    105,819.72x = 158,729.56 × 82,463.64
  4. Step 4: Simplify right side
    105,819.72x = 13,089,417,293.20
  5. Step 5: Solve for x
    x = 13,089,417,293.20/105,819.72
  6. Step 6: Final answer
    x = 123,695.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.