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Finding the Fourth Proportional to 128,289.46, 192,462.54 and 44,047.71

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Solution

The fourth proportional to 128,289.46, 192,462.54 and 44,047.71 is: 66,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,289.46 : 192,462.54 = 44,047.71 : x
  2. Step 2: Convert to fraction form
    128,289.46/192,462.54 = 44,047.71/x
  3. Step 3: Cross multiply
    128,289.46x = 192,462.54 × 44,047.71
  4. Step 4: Simplify right side
    128,289.46x = 8,477,534,147.78
  5. Step 5: Solve for x
    x = 8,477,534,147.78/128,289.46
  6. Step 6: Final answer
    x = 66,081.30

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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.