Home / 203,545.15-305,318.51-85,133.43

Finding the Fourth Proportional to 203,545.15, 305,318.51 and 85,133.43

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Solution

The fourth proportional to 203,545.15, 305,318.51 and 85,133.43 is: 127,700.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,545.15 : 305,318.51 = 85,133.43 : x
  2. Step 2: Convert to fraction form
    203,545.15/305,318.51 = 85,133.43/x
  3. Step 3: Cross multiply
    203,545.15x = 305,318.51 × 85,133.43
  4. Step 4: Simplify right side
    203,545.15x = 25,992,812,371.25
  5. Step 5: Solve for x
    x = 25,992,812,371.25/203,545.15
  6. Step 6: Final answer
    x = 127,700.47

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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.