Home / 198,865.13-274,431-109,441.13

Finding the Fourth Proportional to 198,865.13, 274,431 and 109,441.13

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Solution

The fourth proportional to 198,865.13, 274,431 and 109,441.13 is: 151,027.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,865.13 : 274,431 = 109,441.13 : x
  2. Step 2: Convert to fraction form
    198,865.13/274,431 = 109,441.13/x
  3. Step 3: Cross multiply
    198,865.13x = 274,431 × 109,441.13
  4. Step 4: Simplify right side
    198,865.13x = 30,034,038,747.03
  5. Step 5: Solve for x
    x = 30,034,038,747.03/198,865.13
  6. Step 6: Final answer
    x = 151,027.17

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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.