Home / 137,433.45-189,660.29-83,720.73

Finding the Fourth Proportional to 137,433.45, 189,660.29 and 83,720.73

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Solution

The fourth proportional to 137,433.45, 189,660.29 and 83,720.73 is: 115,535.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,433.45 : 189,660.29 = 83,720.73 : x
  2. Step 2: Convert to fraction form
    137,433.45/189,660.29 = 83,720.73/x
  3. Step 3: Cross multiply
    137,433.45x = 189,660.29 × 83,720.73
  4. Step 4: Simplify right side
    137,433.45x = 15,878,497,512.21
  5. Step 5: Solve for x
    x = 15,878,497,512.21/137,433.45
  6. Step 6: Final answer
    x = 115,535.90

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1.5x scale

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.