Home / 113,313.80-156,280.50-79,310.60

Finding the Fourth Proportional to 113,313.80, 156,280.50 and 79,310.60

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Solution

The fourth proportional to 113,313.80, 156,280.50 and 79,310.60 is: 109,383.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,313.80 : 156,280.50 = 79,310.60 : x
  2. Step 2: Convert to fraction form
    113,313.80/156,280.50 = 79,310.60/x
  3. Step 3: Cross multiply
    113,313.80x = 156,280.50 × 79,310.60
  4. Step 4: Simplify right side
    113,313.80x = 12,394,700,223.30
  5. Step 5: Solve for x
    x = 12,394,700,223.30/113,313.80
  6. Step 6: Final answer
    x = 109,383.85

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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.