Home / 198,403.85-273,765.32-121,898.34

Finding the Fourth Proportional to 198,403.85, 273,765.32 and 121,898.34

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Solution

The fourth proportional to 198,403.85, 273,765.32 and 121,898.34 is: 168,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,403.85 : 273,765.32 = 121,898.34 : x
  2. Step 2: Convert to fraction form
    198,403.85/273,765.32 = 121,898.34/x
  3. Step 3: Cross multiply
    198,403.85x = 273,765.32 × 121,898.34
  4. Step 4: Simplify right side
    198,403.85x = 33,371,536,079.25
  5. Step 5: Solve for x
    x = 33,371,536,079.25/198,403.85
  6. Step 6: Final answer
    x = 168,200.05

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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.