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Finding the Fourth Proportional to 172,994.71, 238,738.62 and 100,392.01

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Solution

The fourth proportional to 172,994.71, 238,738.62 and 100,392.01 is: 138,544.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,994.71 : 238,738.62 = 100,392.01 : x
  2. Step 2: Convert to fraction form
    172,994.71/238,738.62 = 100,392.01/x
  3. Step 3: Cross multiply
    172,994.71x = 238,738.62 × 100,392.01
  4. Step 4: Simplify right side
    172,994.71x = 23,967,450,036.61
  5. Step 5: Solve for x
    x = 23,967,450,036.61/172,994.71
  6. Step 6: Final answer
    x = 138,544.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.