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Finding the Fourth Proportional to 172,260, 237,744.32 and 100,679.49

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Solution

The fourth proportional to 172,260, 237,744.32 and 100,679.49 is: 138,952.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,260 : 237,744.32 = 100,679.49 : x
  2. Step 2: Convert to fraction form
    172,260/237,744.32 = 100,679.49/x
  3. Step 3: Cross multiply
    172,260x = 237,744.32 × 100,679.49
  4. Step 4: Simplify right side
    172,260x = 23,935,976,384.60
  5. Step 5: Solve for x
    x = 23,935,976,384.60/172,260
  6. Step 6: Final answer
    x = 138,952.61

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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.