Home / 156,949.10-235,453.94-66,990.50

Finding the Fourth Proportional to 156,949.10, 235,453.94 and 66,990.50

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Solution

The fourth proportional to 156,949.10, 235,453.94 and 66,990.50 is: 100,498.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,949.10 : 235,453.94 = 66,990.50 : x
  2. Step 2: Convert to fraction form
    156,949.10/235,453.94 = 66,990.50/x
  3. Step 3: Cross multiply
    156,949.10x = 235,453.94 × 66,990.50
  4. Step 4: Simplify right side
    156,949.10x = 15,773,177,167.57
  5. Step 5: Solve for x
    x = 15,773,177,167.57/156,949.10
  6. Step 6: Final answer
    x = 100,498.68

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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.