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Finding the Fourth Proportional to 172,398.65, 237,942.90 and 107,897.85

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Solution

The fourth proportional to 172,398.65, 237,942.90 and 107,897.85 is: 148,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,398.65 : 237,942.90 = 107,897.85 : x
  2. Step 2: Convert to fraction form
    172,398.65/237,942.90 = 107,897.85/x
  3. Step 3: Cross multiply
    172,398.65x = 237,942.90 × 107,897.85
  4. Step 4: Simplify right side
    172,398.65x = 25,673,527,332.77
  5. Step 5: Solve for x
    x = 25,673,527,332.77/172,398.65
  6. Step 6: Final answer
    x = 148,919.54

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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.