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Finding the Fourth Proportional to 172,293.84, 237,730.65 and 100,660.03

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Solution

The fourth proportional to 172,293.84, 237,730.65 and 100,660.03 is: 138,890.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,293.84 : 237,730.65 = 100,660.03 : x
  2. Step 2: Convert to fraction form
    172,293.84/237,730.65 = 100,660.03/x
  3. Step 3: Cross multiply
    172,293.84x = 237,730.65 × 100,660.03
  4. Step 4: Simplify right side
    172,293.84x = 23,929,972,668.97
  5. Step 5: Solve for x
    x = 23,929,972,668.97/172,293.84
  6. Step 6: Final answer
    x = 138,890.47

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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.