Home / 156,972.28-216,620.68-85,352.36

Finding the Fourth Proportional to 156,972.28, 216,620.68 and 85,352.36

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Solution

The fourth proportional to 156,972.28, 216,620.68 and 85,352.36 is: 117,785.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,972.28 : 216,620.68 = 85,352.36 : x
  2. Step 2: Convert to fraction form
    156,972.28/216,620.68 = 85,352.36/x
  3. Step 3: Cross multiply
    156,972.28x = 216,620.68 × 85,352.36
  4. Step 4: Simplify right side
    156,972.28x = 18,489,086,262.80
  5. Step 5: Solve for x
    x = 18,489,086,262.80/156,972.28
  6. Step 6: Final answer
    x = 117,785.68

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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.