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Finding the Fourth Proportional to 172,302.48, 258,453 and 45,942.48

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Solution

The fourth proportional to 172,302.48, 258,453 and 45,942.48 is: 68,913.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,302.48 : 258,453 = 45,942.48 : x
  2. Step 2: Convert to fraction form
    172,302.48/258,453 = 45,942.48/x
  3. Step 3: Cross multiply
    172,302.48x = 258,453 × 45,942.48
  4. Step 4: Simplify right side
    172,302.48x = 11,873,971,783.44
  5. Step 5: Solve for x
    x = 11,873,971,783.44/172,302.48
  6. Step 6: Final answer
    x = 68,913.53

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1.5x scale

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.