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Finding the Fourth Proportional to 172,644.60, 259,003.86 and 97,800.12

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Solution

The fourth proportional to 172,644.60, 259,003.86 and 97,800.12 is: 146,721.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,644.60 : 259,003.86 = 97,800.12 : x
  2. Step 2: Convert to fraction form
    172,644.60/259,003.86 = 97,800.12/x
  3. Step 3: Cross multiply
    172,644.60x = 259,003.86 × 97,800.12
  4. Step 4: Simplify right side
    172,644.60x = 25,330,608,588.46
  5. Step 5: Solve for x
    x = 25,330,608,588.46/172,644.60
  6. Step 6: Final answer
    x = 146,721.12

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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.