Home / 156,789.30-235,205.55-68,040.30

Finding the Fourth Proportional to 156,789.30, 235,205.55 and 68,040.30

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Solution

The fourth proportional to 156,789.30, 235,205.55 and 68,040.30 is: 102,069.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,789.30 : 235,205.55 = 68,040.30 : x
  2. Step 2: Convert to fraction form
    156,789.30/235,205.55 = 68,040.30/x
  3. Step 3: Cross multiply
    156,789.30x = 235,205.55 × 68,040.30
  4. Step 4: Simplify right side
    156,789.30x = 16,003,456,183.67
  5. Step 5: Solve for x
    x = 16,003,456,183.67/156,789.30
  6. Step 6: Final answer
    x = 102,069.82

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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.