Home / 156,768.56-235,157.30-38,439.80

Finding the Fourth Proportional to 156,768.56, 235,157.30 and 38,439.80

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Solution

The fourth proportional to 156,768.56, 235,157.30 and 38,439.80 is: 57,660.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,768.56 : 235,157.30 = 38,439.80 : x
  2. Step 2: Convert to fraction form
    156,768.56/235,157.30 = 38,439.80/x
  3. Step 3: Cross multiply
    156,768.56x = 235,157.30 × 38,439.80
  4. Step 4: Simplify right side
    156,768.56x = 9,039,399,580.54
  5. Step 5: Solve for x
    x = 9,039,399,580.54/156,768.56
  6. Step 6: Final answer
    x = 57,660.79

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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.