Home / 156,458.24-215,855.68-102,772.16

Finding the Fourth Proportional to 156,458.24, 215,855.68 and 102,772.16

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Solution

The fourth proportional to 156,458.24, 215,855.68 and 102,772.16 is: 141,788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,458.24 : 215,855.68 = 102,772.16 : x
  2. Step 2: Convert to fraction form
    156,458.24/215,855.68 = 102,772.16/x
  3. Step 3: Cross multiply
    156,458.24x = 215,855.68 × 102,772.16
  4. Step 4: Simplify right side
    156,458.24x = 22,183,954,481.87
  5. Step 5: Solve for x
    x = 22,183,954,481.87/156,458.24
  6. Step 6: Final answer
    x = 141,788.34

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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.