Home / 137,889.81-206,835.25-91,132.29

Finding the Fourth Proportional to 137,889.81, 206,835.25 and 91,132.29

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Solution

The fourth proportional to 137,889.81, 206,835.25 and 91,132.29 is: 136,698.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,889.81 : 206,835.25 = 91,132.29 : x
  2. Step 2: Convert to fraction form
    137,889.81/206,835.25 = 91,132.29/x
  3. Step 3: Cross multiply
    137,889.81x = 206,835.25 × 91,132.29
  4. Step 4: Simplify right side
    137,889.81x = 18,849,368,723.22
  5. Step 5: Solve for x
    x = 18,849,368,723.22/137,889.81
  6. Step 6: Final answer
    x = 136,698.78

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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.