Home / 156,640.11-216,163.60-85,020.16

Finding the Fourth Proportional to 156,640.11, 216,163.60 and 85,020.16

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Solution

The fourth proportional to 156,640.11, 216,163.60 and 85,020.16 is: 117,327.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,640.11 : 216,163.60 = 85,020.16 : x
  2. Step 2: Convert to fraction form
    156,640.11/216,163.60 = 85,020.16/x
  3. Step 3: Cross multiply
    156,640.11x = 216,163.60 × 85,020.16
  4. Step 4: Simplify right side
    156,640.11x = 18,378,263,858.18
  5. Step 5: Solve for x
    x = 18,378,263,858.18/156,640.11
  6. Step 6: Final answer
    x = 117,327.96

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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.