Home / 113,520.70-156,634.68-65,771.20

Finding the Fourth Proportional to 113,520.70, 156,634.68 and 65,771.20

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Solution

The fourth proportional to 113,520.70, 156,634.68 and 65,771.20 is: 90,750.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,520.70 : 156,634.68 = 65,771.20 : x
  2. Step 2: Convert to fraction form
    113,520.70/156,634.68 = 65,771.20/x
  3. Step 3: Cross multiply
    113,520.70x = 156,634.68 × 65,771.20
  4. Step 4: Simplify right side
    113,520.70x = 10,302,050,865.22
  5. Step 5: Solve for x
    x = 10,302,050,865.22/113,520.70
  6. Step 6: Final answer
    x = 90,750.42

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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.