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Finding the Fourth Proportional to 172,962.60, 259,239.10 and 73,122.60

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Solution

The fourth proportional to 172,962.60, 259,239.10 and 73,122.60 is: 109,597.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,962.60 : 259,239.10 = 73,122.60 : x
  2. Step 2: Convert to fraction form
    172,962.60/259,239.10 = 73,122.60/x
  3. Step 3: Cross multiply
    172,962.60x = 259,239.10 × 73,122.60
  4. Step 4: Simplify right side
    172,962.60x = 18,956,237,013.66
  5. Step 5: Solve for x
    x = 18,956,237,013.66/172,962.60
  6. Step 6: Final answer
    x = 109,597.32

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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.