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Finding the Fourth Proportional to 156,336.48, 215,745.12 and 91,849.14

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Solution

The fourth proportional to 156,336.48, 215,745.12 and 91,849.14 is: 126,752.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,336.48 : 215,745.12 = 91,849.14 : x
  2. Step 2: Convert to fraction form
    156,336.48/215,745.12 = 91,849.14/x
  3. Step 3: Cross multiply
    156,336.48x = 215,745.12 × 91,849.14
  4. Step 4: Simplify right side
    156,336.48x = 19,816,003,731.20
  5. Step 5: Solve for x
    x = 19,816,003,731.20/156,336.48
  6. Step 6: Final answer
    x = 126,752.27

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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.