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Finding the Fourth Proportional to 172,515.97, 238,055.34 and 127,218.34

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Solution

The fourth proportional to 172,515.97, 238,055.34 and 127,218.34 is: 175,548.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,515.97 : 238,055.34 = 127,218.34 : x
  2. Step 2: Convert to fraction form
    172,515.97/238,055.34 = 127,218.34/x
  3. Step 3: Cross multiply
    172,515.97x = 238,055.34 × 127,218.34
  4. Step 4: Simplify right side
    172,515.97x = 30,285,004,572.44
  5. Step 5: Solve for x
    x = 30,285,004,572.44/172,515.97
  6. Step 6: Final answer
    x = 175,548.99

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1.5x scale

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.