Home / 103,979.09-143,425.08-68,171.42

Finding the Fourth Proportional to 103,979.09, 143,425.08 and 68,171.42

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Solution

The fourth proportional to 103,979.09, 143,425.08 and 68,171.42 is: 94,033.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,979.09 : 143,425.08 = 68,171.42 : x
  2. Step 2: Convert to fraction form
    103,979.09/143,425.08 = 68,171.42/x
  3. Step 3: Cross multiply
    103,979.09x = 143,425.08 × 68,171.42
  4. Step 4: Simplify right side
    103,979.09x = 9,777,490,650.09
  5. Step 5: Solve for x
    x = 9,777,490,650.09/103,979.09
  6. Step 6: Final answer
    x = 94,033.24

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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.