Home / 213,170.09-319,786.72-70,968.92

Finding the Fourth Proportional to 213,170.09, 319,786.72 and 70,968.92

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Solution

The fourth proportional to 213,170.09, 319,786.72 and 70,968.92 is: 106,463.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,170.09 : 319,786.72 = 70,968.92 : x
  2. Step 2: Convert to fraction form
    213,170.09/319,786.72 = 70,968.92/x
  3. Step 3: Cross multiply
    213,170.09x = 319,786.72 × 70,968.92
  4. Step 4: Simplify right side
    213,170.09x = 22,694,916,372.39
  5. Step 5: Solve for x
    x = 22,694,916,372.39/213,170.09
  6. Step 6: Final answer
    x = 106,463.89

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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.