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Finding the Fourth Proportional to 172,994.40, 259,272.90 and 154,186.20

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Solution

The fourth proportional to 172,994.40, 259,272.90 and 154,186.20 is: 231,084.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,994.40 : 259,272.90 = 154,186.20 : x
  2. Step 2: Convert to fraction form
    172,994.40/259,272.90 = 154,186.20/x
  3. Step 3: Cross multiply
    172,994.40x = 259,272.90 × 154,186.20
  4. Step 4: Simplify right side
    172,994.40x = 39,976,303,213.98
  5. Step 5: Solve for x
    x = 39,976,303,213.98/172,994.40
  6. Step 6: Final answer
    x = 231,084.38

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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.