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Finding the Fourth Proportional to 172,008.92, 258,013.15 and 112,830.52

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Solution

The fourth proportional to 172,008.92, 258,013.15 and 112,830.52 is: 169,245.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,008.92 : 258,013.15 = 112,830.52 : x
  2. Step 2: Convert to fraction form
    172,008.92/258,013.15 = 112,830.52/x
  3. Step 3: Cross multiply
    172,008.92x = 258,013.15 × 112,830.52
  4. Step 4: Simplify right side
    172,008.92x = 29,111,757,438.00
  5. Step 5: Solve for x
    x = 29,111,757,438.00/172,008.92
  6. Step 6: Final answer
    x = 169,245.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.