Home / 134,153.20-201,359.40-81,665.20

Finding the Fourth Proportional to 134,153.20, 201,359.40 and 81,665.20

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Solution

The fourth proportional to 134,153.20, 201,359.40 and 81,665.20 is: 122,576.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,153.20 : 201,359.40 = 81,665.20 : x
  2. Step 2: Convert to fraction form
    134,153.20/201,359.40 = 81,665.20/x
  3. Step 3: Cross multiply
    134,153.20x = 201,359.40 × 81,665.20
  4. Step 4: Simplify right side
    134,153.20x = 16,444,055,672.88
  5. Step 5: Solve for x
    x = 16,444,055,672.88/134,153.20
  6. Step 6: Final answer
    x = 122,576.69

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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.