Home / 148,983.74-205,601.59-81,005.28

Finding the Fourth Proportional to 148,983.74, 205,601.59 and 81,005.28

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Solution

The fourth proportional to 148,983.74, 205,601.59 and 81,005.28 is: 111,789.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,983.74 : 205,601.59 = 81,005.28 : x
  2. Step 2: Convert to fraction form
    148,983.74/205,601.59 = 81,005.28/x
  3. Step 3: Cross multiply
    148,983.74x = 205,601.59 × 81,005.28
  4. Step 4: Simplify right side
    148,983.74x = 16,654,813,696.65
  5. Step 5: Solve for x
    x = 16,654,813,696.65/148,983.74
  6. Step 6: Final answer
    x = 111,789.47

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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.