Home / 88,405.68-122,119.20-82,107.12

Finding the Fourth Proportional to 88,405.68, 122,119.20 and 82,107.12

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Solution

The fourth proportional to 88,405.68, 122,119.20 and 82,107.12 is: 113,418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,405.68 : 122,119.20 = 82,107.12 : x
  2. Step 2: Convert to fraction form
    88,405.68/122,119.20 = 82,107.12/x
  3. Step 3: Cross multiply
    88,405.68x = 122,119.20 × 82,107.12
  4. Step 4: Simplify right side
    88,405.68x = 10,026,855,808.70
  5. Step 5: Solve for x
    x = 10,026,855,808.70/88,405.68
  6. Step 6: Final answer
    x = 113,418.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.