Home / 156,930.80-235,396.20-78,198.80

Finding the Fourth Proportional to 156,930.80, 235,396.20 and 78,198.80

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Solution

The fourth proportional to 156,930.80, 235,396.20 and 78,198.80 is: 117,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.80 : 235,396.20 = 78,198.80 : x
  2. Step 2: Convert to fraction form
    156,930.80/235,396.20 = 78,198.80/x
  3. Step 3: Cross multiply
    156,930.80x = 235,396.20 × 78,198.80
  4. Step 4: Simplify right side
    156,930.80x = 18,407,700,364.56
  5. Step 5: Solve for x
    x = 18,407,700,364.56/156,930.80
  6. Step 6: Final answer
    x = 117,298.20

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1.5x scale

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.