Home / 208,351.42-312,549.09-68,109.82

Finding the Fourth Proportional to 208,351.42, 312,549.09 and 68,109.82

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Solution

The fourth proportional to 208,351.42, 312,549.09 and 68,109.82 is: 102,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,351.42 : 312,549.09 = 68,109.82 : x
  2. Step 2: Convert to fraction form
    208,351.42/312,549.09 = 68,109.82/x
  3. Step 3: Cross multiply
    208,351.42x = 312,549.09 × 68,109.82
  4. Step 4: Simplify right side
    208,351.42x = 21,287,662,261.06
  5. Step 5: Solve for x
    x = 21,287,662,261.06/208,351.42
  6. Step 6: Final answer
    x = 102,171.91

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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.