Home / 156,651.10-235,049.55-81,855.70

Finding the Fourth Proportional to 156,651.10, 235,049.55 and 81,855.70

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Solution

The fourth proportional to 156,651.10, 235,049.55 and 81,855.70 is: 122,821.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,651.10 : 235,049.55 = 81,855.70 : x
  2. Step 2: Convert to fraction form
    156,651.10/235,049.55 = 81,855.70/x
  3. Step 3: Cross multiply
    156,651.10x = 235,049.55 × 81,855.70
  4. Step 4: Simplify right side
    156,651.10x = 19,240,145,449.94
  5. Step 5: Solve for x
    x = 19,240,145,449.94/156,651.10
  6. Step 6: Final answer
    x = 122,821.64

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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.