Home / 134,105.20-201,287.40-81,617.20

Finding the Fourth Proportional to 134,105.20, 201,287.40 and 81,617.20

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Solution

The fourth proportional to 134,105.20, 201,287.40 and 81,617.20 is: 122,504.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,105.20 : 201,287.40 = 81,617.20 : x
  2. Step 2: Convert to fraction form
    134,105.20/201,287.40 = 81,617.20/x
  3. Step 3: Cross multiply
    134,105.20x = 201,287.40 × 81,617.20
  4. Step 4: Simplify right side
    134,105.20x = 16,428,513,983.28
  5. Step 5: Solve for x
    x = 16,428,513,983.28/134,105.20
  6. Step 6: Final answer
    x = 122,504.68

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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.