Home / 146,436.40-202,081.62-81,905.72

Finding the Fourth Proportional to 146,436.40, 202,081.62 and 81,905.72

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Solution

The fourth proportional to 146,436.40, 202,081.62 and 81,905.72 is: 113,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,436.40 : 202,081.62 = 81,905.72 : x
  2. Step 2: Convert to fraction form
    146,436.40/202,081.62 = 81,905.72/x
  3. Step 3: Cross multiply
    146,436.40x = 202,081.62 × 81,905.72
  4. Step 4: Simplify right side
    146,436.40x = 16,551,640,584.87
  5. Step 5: Solve for x
    x = 16,551,640,584.87/146,436.40
  6. Step 6: Final answer
    x = 113,029.55

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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.