Home / 109,513.20-164,442.60-80,137.20

Finding the Fourth Proportional to 109,513.20, 164,442.60 and 80,137.20

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Solution

The fourth proportional to 109,513.20, 164,442.60 and 80,137.20 is: 120,332.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,513.20 : 164,442.60 = 80,137.20 : x
  2. Step 2: Convert to fraction form
    109,513.20/164,442.60 = 80,137.20/x
  3. Step 3: Cross multiply
    109,513.20x = 164,442.60 × 80,137.20
  4. Step 4: Simplify right side
    109,513.20x = 13,177,969,524.72
  5. Step 5: Solve for x
    x = 13,177,969,524.72/109,513.20
  6. Step 6: Final answer
    x = 120,332.25

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1.5x scale

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.