Home / 403,921.10-605,945.65-137,706.70

Finding the Fourth Proportional to 403,921.10, 605,945.65 and 137,706.70

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Solution

The fourth proportional to 403,921.10, 605,945.65 and 137,706.70 is: 206,581.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,921.10 : 605,945.65 = 137,706.70 : x
  2. Step 2: Convert to fraction form
    403,921.10/605,945.65 = 137,706.70/x
  3. Step 3: Cross multiply
    403,921.10x = 605,945.65 × 137,706.70
  4. Step 4: Simplify right side
    403,921.10x = 83,442,775,840.86
  5. Step 5: Solve for x
    x = 83,442,775,840.86/403,921.10
  6. Step 6: Final answer
    x = 206,581.87

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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.