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Finding the Fourth Proportional to 172,990.42, 259,520.64 and 73,150.46

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Solution

The fourth proportional to 172,990.42, 259,520.64 and 73,150.46 is: 109,740.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,990.42 : 259,520.64 = 73,150.46 : x
  2. Step 2: Convert to fraction form
    172,990.42/259,520.64 = 73,150.46/x
  3. Step 3: Cross multiply
    172,990.42x = 259,520.64 × 73,150.46
  4. Step 4: Simplify right side
    172,990.42x = 18,984,054,195.49
  5. Step 5: Solve for x
    x = 18,984,054,195.49/172,990.42
  6. Step 6: Final answer
    x = 109,740.49

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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.