Home / 213,127.17-319,687.97-61,328.21

Finding the Fourth Proportional to 213,127.17, 319,687.97 and 61,328.21

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Solution

The fourth proportional to 213,127.17, 319,687.97 and 61,328.21 is: 91,991.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,127.17 : 319,687.97 = 61,328.21 : x
  2. Step 2: Convert to fraction form
    213,127.17/319,687.97 = 61,328.21/x
  3. Step 3: Cross multiply
    213,127.17x = 319,687.97 × 61,328.21
  4. Step 4: Simplify right side
    213,127.17x = 19,605,890,958.63
  5. Step 5: Solve for x
    x = 19,605,890,958.63/213,127.17
  6. Step 6: Final answer
    x = 91,991.51

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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.