Home / 128,247.75-192,392.30-39,501.21

Finding the Fourth Proportional to 128,247.75, 192,392.30 and 39,501.21

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Solution

The fourth proportional to 128,247.75, 192,392.30 and 39,501.21 is: 59,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,247.75 : 192,392.30 = 39,501.21 : x
  2. Step 2: Convert to fraction form
    128,247.75/192,392.30 = 39,501.21/x
  3. Step 3: Cross multiply
    128,247.75x = 192,392.30 × 39,501.21
  4. Step 4: Simplify right side
    128,247.75x = 7,599,728,447.18
  5. Step 5: Solve for x
    x = 7,599,728,447.18/128,247.75
  6. Step 6: Final answer
    x = 59,258.18

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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.