Home / 115,920.20-173,880.30-71,402.60

Finding the Fourth Proportional to 115,920.20, 173,880.30 and 71,402.60

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Solution

The fourth proportional to 115,920.20, 173,880.30 and 71,402.60 is: 107,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920.20 : 173,880.30 = 71,402.60 : x
  2. Step 2: Convert to fraction form
    115,920.20/173,880.30 = 71,402.60/x
  3. Step 3: Cross multiply
    115,920.20x = 173,880.30 × 71,402.60
  4. Step 4: Simplify right side
    115,920.20x = 12,415,505,508.78
  5. Step 5: Solve for x
    x = 12,415,505,508.78/115,920.20
  6. Step 6: Final answer
    x = 107,103.90

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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.