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Finding the Fourth Proportional to 172,997.10, 259,690.05 and 133,728.30

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Solution

The fourth proportional to 172,997.10, 259,690.05 and 133,728.30 is: 200,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,997.10 : 259,690.05 = 133,728.30 : x
  2. Step 2: Convert to fraction form
    172,997.10/259,690.05 = 133,728.30/x
  3. Step 3: Cross multiply
    172,997.10x = 259,690.05 × 133,728.30
  4. Step 4: Simplify right side
    172,997.10x = 34,727,908,913.42
  5. Step 5: Solve for x
    x = 34,727,908,913.42/172,997.10
  6. Step 6: Final answer
    x = 200,742.72

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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.