Home / 198,143.51-273,438-113,262.40

Finding the Fourth Proportional to 198,143.51, 273,438 and 113,262.40

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Solution

The fourth proportional to 198,143.51, 273,438 and 113,262.40 is: 156,302.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,143.51 : 273,438 = 113,262.40 : x
  2. Step 2: Convert to fraction form
    198,143.51/273,438 = 113,262.40/x
  3. Step 3: Cross multiply
    198,143.51x = 273,438 × 113,262.40
  4. Step 4: Simplify right side
    198,143.51x = 30,970,244,131.20
  5. Step 5: Solve for x
    x = 30,970,244,131.20/198,143.51
  6. Step 6: Final answer
    x = 156,302.09

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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.