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Finding the Fourth Proportional to 172,044.88, 257,968.92 and 66,740.92

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Solution

The fourth proportional to 172,044.88, 257,968.92 and 66,740.92 is: 100,073.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,044.88 : 257,968.92 = 66,740.92 : x
  2. Step 2: Convert to fraction form
    172,044.88/257,968.92 = 66,740.92/x
  3. Step 3: Cross multiply
    172,044.88x = 257,968.92 × 66,740.92
  4. Step 4: Simplify right side
    172,044.88x = 17,217,083,052.21
  5. Step 5: Solve for x
    x = 17,217,083,052.21/172,044.88
  6. Step 6: Final answer
    x = 100,073.21

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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.