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Finding the Fourth Proportional to 131,960, 182,106.96 and 72,344

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Solution

The fourth proportional to 131,960, 182,106.96 and 72,344 is: 99,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,960 : 182,106.96 = 72,344 : x
  2. Step 2: Convert to fraction form
    131,960/182,106.96 = 72,344/x
  3. Step 3: Cross multiply
    131,960x = 182,106.96 × 72,344
  4. Step 4: Simplify right side
    131,960x = 13,174,345,914.24
  5. Step 5: Solve for x
    x = 13,174,345,914.24/131,960
  6. Step 6: Final answer
    x = 99,835.90

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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.