Home / 137,844.16-206,405.37-90,309.71

Finding the Fourth Proportional to 137,844.16, 206,405.37 and 90,309.71

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Solution

The fourth proportional to 137,844.16, 206,405.37 and 90,309.71 is: 135,228.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,844.16 : 206,405.37 = 90,309.71 : x
  2. Step 2: Convert to fraction form
    137,844.16/206,405.37 = 90,309.71/x
  3. Step 3: Cross multiply
    137,844.16x = 206,405.37 × 90,309.71
  4. Step 4: Simplify right side
    137,844.16x = 18,640,409,623.16
  5. Step 5: Solve for x
    x = 18,640,409,623.16/137,844.16
  6. Step 6: Final answer
    x = 135,228.14

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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.