Home / 134,149.20-201,353.40-81,661.20

Finding the Fourth Proportional to 134,149.20, 201,353.40 and 81,661.20

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Solution

The fourth proportional to 134,149.20, 201,353.40 and 81,661.20 is: 122,570.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,149.20 : 201,353.40 = 81,661.20 : x
  2. Step 2: Convert to fraction form
    134,149.20/201,353.40 = 81,661.20/x
  3. Step 3: Cross multiply
    134,149.20x = 201,353.40 × 81,661.20
  4. Step 4: Simplify right side
    134,149.20x = 16,442,760,268.08
  5. Step 5: Solve for x
    x = 16,442,760,268.08/134,149.20
  6. Step 6: Final answer
    x = 122,570.69

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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.