Home / 156,634.21-216,153.11-85,013.60

Finding the Fourth Proportional to 156,634.21, 216,153.11 and 85,013.60

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Solution

The fourth proportional to 156,634.21, 216,153.11 and 85,013.60 is: 117,317.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,634.21 : 216,153.11 = 85,013.60 : x
  2. Step 2: Convert to fraction form
    156,634.21/216,153.11 = 85,013.60/x
  3. Step 3: Cross multiply
    156,634.21x = 216,153.11 × 85,013.60
  4. Step 4: Simplify right side
    156,634.21x = 18,375,954,032.30
  5. Step 5: Solve for x
    x = 18,375,954,032.30/156,634.21
  6. Step 6: Final answer
    x = 117,317.63

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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.