Home / 113,715.92-156,735.24-79,734.80

Finding the Fourth Proportional to 113,715.92, 156,735.24 and 79,734.80

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Solution

The fourth proportional to 113,715.92, 156,735.24 and 79,734.80 is: 109,898.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,715.92 : 156,735.24 = 79,734.80 : x
  2. Step 2: Convert to fraction form
    113,715.92/156,735.24 = 79,734.80/x
  3. Step 3: Cross multiply
    113,715.92x = 156,735.24 × 79,734.80
  4. Step 4: Simplify right side
    113,715.92x = 12,497,253,014.35
  5. Step 5: Solve for x
    x = 12,497,253,014.35/113,715.92
  6. Step 6: Final answer
    x = 109,898.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.