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Finding the Fourth Proportional to 156,850.80, 216,454.32 and 85,231.68

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Solution

The fourth proportional to 156,850.80, 216,454.32 and 85,231.68 is: 117,619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,850.80 : 216,454.32 = 85,231.68 : x
  2. Step 2: Convert to fraction form
    156,850.80/216,454.32 = 85,231.68/x
  3. Step 3: Cross multiply
    156,850.80x = 216,454.32 × 85,231.68
  4. Step 4: Simplify right side
    156,850.80x = 18,448,765,336.86
  5. Step 5: Solve for x
    x = 18,448,765,336.86/156,850.80
  6. Step 6: Final answer
    x = 117,619.84

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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.