Home / 128,210.60-192,336.78-39,464.12

Finding the Fourth Proportional to 128,210.60, 192,336.78 and 39,464.12

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Solution

The fourth proportional to 128,210.60, 192,336.78 and 39,464.12 is: 59,202.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,210.60 : 192,336.78 = 39,464.12 : x
  2. Step 2: Convert to fraction form
    128,210.60/192,336.78 = 39,464.12/x
  3. Step 3: Cross multiply
    128,210.60x = 192,336.78 × 39,464.12
  4. Step 4: Simplify right side
    128,210.60x = 7,590,401,766.33
  5. Step 5: Solve for x
    x = 7,590,401,766.33/128,210.60
  6. Step 6: Final answer
    x = 59,202.61

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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.