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Finding the Fourth Proportional to 172,740.92, 259,146.21 and 72,901.22

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Solution

The fourth proportional to 172,740.92, 259,146.21 and 72,901.22 is: 109,366.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,740.92 : 259,146.21 = 72,901.22 : x
  2. Step 2: Convert to fraction form
    172,740.92/259,146.21 = 72,901.22/x
  3. Step 3: Cross multiply
    172,740.92x = 259,146.21 × 72,901.22
  4. Step 4: Simplify right side
    172,740.92x = 18,892,074,867.38
  5. Step 5: Solve for x
    x = 18,892,074,867.38/172,740.92
  6. Step 6: Final answer
    x = 109,366.53

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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.