Home / 156,431.16-234,716.50-72,146

Finding the Fourth Proportional to 156,431.16, 234,716.50 and 72,146

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Solution

The fourth proportional to 156,431.16, 234,716.50 and 72,146 is: 108,251.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,431.16 : 234,716.50 = 72,146 : x
  2. Step 2: Convert to fraction form
    156,431.16/234,716.50 = 72,146/x
  3. Step 3: Cross multiply
    156,431.16x = 234,716.50 × 72,146
  4. Step 4: Simplify right side
    156,431.16x = 16,933,856,609
  5. Step 5: Solve for x
    x = 16,933,856,609/156,431.16
  6. Step 6: Final answer
    x = 108,251.17

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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.