Home / 198,830.86-298,246.29-72,480.58

Finding the Fourth Proportional to 198,830.86, 298,246.29 and 72,480.58

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Solution

The fourth proportional to 198,830.86, 298,246.29 and 72,480.58 is: 108,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,830.86 : 298,246.29 = 72,480.58 : x
  2. Step 2: Convert to fraction form
    198,830.86/298,246.29 = 72,480.58/x
  3. Step 3: Cross multiply
    198,830.86x = 298,246.29 × 72,480.58
  4. Step 4: Simplify right side
    198,830.86x = 21,617,064,082.05
  5. Step 5: Solve for x
    x = 21,617,064,082.05/198,830.86
  6. Step 6: Final answer
    x = 108,720.87

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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.