Home / 135,639.30-203,401.35-65,540.10

Finding the Fourth Proportional to 135,639.30, 203,401.35 and 65,540.10

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Solution

The fourth proportional to 135,639.30, 203,401.35 and 65,540.10 is: 98,282.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,639.30 : 203,401.35 = 65,540.10 : x
  2. Step 2: Convert to fraction form
    135,639.30/203,401.35 = 65,540.10/x
  3. Step 3: Cross multiply
    135,639.30x = 203,401.35 × 65,540.10
  4. Step 4: Simplify right side
    135,639.30x = 13,330,944,819.14
  5. Step 5: Solve for x
    x = 13,330,944,819.14/135,639.30
  6. Step 6: Final answer
    x = 98,282.32

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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.