Home / 137,021.25-189,036.84-83,286.66

Finding the Fourth Proportional to 137,021.25, 189,036.84 and 83,286.66

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Solution

The fourth proportional to 137,021.25, 189,036.84 and 83,286.66 is: 114,903.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,021.25 : 189,036.84 = 83,286.66 : x
  2. Step 2: Convert to fraction form
    137,021.25/189,036.84 = 83,286.66/x
  3. Step 3: Cross multiply
    137,021.25x = 189,036.84 × 83,286.66
  4. Step 4: Simplify right side
    137,021.25x = 15,744,247,076.71
  5. Step 5: Solve for x
    x = 15,744,247,076.71/137,021.25
  6. Step 6: Final answer
    x = 114,903.69

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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.