Home / 105,985.73-158,979.51-31,107.11

Finding the Fourth Proportional to 105,985.73, 158,979.51 and 31,107.11

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Solution

The fourth proportional to 105,985.73, 158,979.51 and 31,107.11 is: 46,660.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,985.73 : 158,979.51 = 31,107.11 : x
  2. Step 2: Convert to fraction form
    105,985.73/158,979.51 = 31,107.11/x
  3. Step 3: Cross multiply
    105,985.73x = 158,979.51 × 31,107.11
  4. Step 4: Simplify right side
    105,985.73x = 4,945,392,310.42
  5. Step 5: Solve for x
    x = 4,945,392,310.42/105,985.73
  6. Step 6: Final answer
    x = 46,660.92

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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.