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Finding the Fourth Proportional to 172,990.14, 259,407.28 and 73,098.91

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Solution

The fourth proportional to 172,990.14, 259,407.28 and 73,098.91 is: 109,615.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,990.14 : 259,407.28 = 73,098.91 : x
  2. Step 2: Convert to fraction form
    172,990.14/259,407.28 = 73,098.91/x
  3. Step 3: Cross multiply
    172,990.14x = 259,407.28 × 73,098.91
  4. Step 4: Simplify right side
    172,990.14x = 18,962,389,414.06
  5. Step 5: Solve for x
    x = 18,962,389,414.06/172,990.14
  6. Step 6: Final answer
    x = 109,615.43

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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.