Home / 156,640.23-216,163.54-85,020.23

Finding the Fourth Proportional to 156,640.23, 216,163.54 and 85,020.23

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Solution

The fourth proportional to 156,640.23, 216,163.54 and 85,020.23 is: 117,327.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,640.23 : 216,163.54 = 85,020.23 : x
  2. Step 2: Convert to fraction form
    156,640.23/216,163.54 = 85,020.23/x
  3. Step 3: Cross multiply
    156,640.23x = 216,163.54 × 85,020.23
  4. Step 4: Simplify right side
    156,640.23x = 18,378,274,056.86
  5. Step 5: Solve for x
    x = 18,378,274,056.86/156,640.23
  6. Step 6: Final answer
    x = 117,327.93

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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.