Home / 137,371.92-189,589.20-83,688.48

Finding the Fourth Proportional to 137,371.92, 189,589.20 and 83,688.48

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Solution

The fourth proportional to 137,371.92, 189,589.20 and 83,688.48 is: 115,499.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,371.92 : 189,589.20 = 83,688.48 : x
  2. Step 2: Convert to fraction form
    137,371.92/189,589.20 = 83,688.48/x
  3. Step 3: Cross multiply
    137,371.92x = 189,589.20 × 83,688.48
  4. Step 4: Simplify right side
    137,371.92x = 15,866,431,972.42
  5. Step 5: Solve for x
    x = 15,866,431,972.42/137,371.92
  6. Step 6: Final answer
    x = 115,499.82

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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.