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Finding the Fourth Proportional to 156,620.60, 234,930.90 and 112,661.90

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Solution

The fourth proportional to 156,620.60, 234,930.90 and 112,661.90 is: 168,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,620.60 : 234,930.90 = 112,661.90 : x
  2. Step 2: Convert to fraction form
    156,620.60/234,930.90 = 112,661.90/x
  3. Step 3: Cross multiply
    156,620.60x = 234,930.90 × 112,661.90
  4. Step 4: Simplify right side
    156,620.60x = 26,467,761,562.71
  5. Step 5: Solve for x
    x = 26,467,761,562.71/156,620.60
  6. Step 6: Final answer
    x = 168,992.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.