Home / 138,724.80-208,087.20-134,132.10

Finding the Fourth Proportional to 138,724.80, 208,087.20 and 134,132.10

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Solution

The fourth proportional to 138,724.80, 208,087.20 and 134,132.10 is: 201,198.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,724.80 : 208,087.20 = 134,132.10 : x
  2. Step 2: Convert to fraction form
    138,724.80/208,087.20 = 134,132.10/x
  3. Step 3: Cross multiply
    138,724.80x = 208,087.20 × 134,132.10
  4. Step 4: Simplify right side
    138,724.80x = 27,911,173,119.12
  5. Step 5: Solve for x
    x = 27,911,173,119.12/138,724.80
  6. Step 6: Final answer
    x = 201,198.15

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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.