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Finding the Fourth Proportional to 95,107.52, 131,108.64 and 72,407

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Solution

The fourth proportional to 95,107.52, 131,108.64 and 72,407 is: 99,815.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,107.52 : 131,108.64 = 72,407 : x
  2. Step 2: Convert to fraction form
    95,107.52/131,108.64 = 72,407/x
  3. Step 3: Cross multiply
    95,107.52x = 131,108.64 × 72,407
  4. Step 4: Simplify right side
    95,107.52x = 9,493,183,296.48
  5. Step 5: Solve for x
    x = 9,493,183,296.48/95,107.52
  6. Step 6: Final answer
    x = 99,815.28

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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.