Home / 128,110.48-192,061.84-53,286.60

Finding the Fourth Proportional to 128,110.48, 192,061.84 and 53,286.60

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Solution

The fourth proportional to 128,110.48, 192,061.84 and 53,286.60 is: 79,886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,110.48 : 192,061.84 = 53,286.60 : x
  2. Step 2: Convert to fraction form
    128,110.48/192,061.84 = 53,286.60/x
  3. Step 3: Cross multiply
    128,110.48x = 192,061.84 × 53,286.60
  4. Step 4: Simplify right side
    128,110.48x = 10,234,322,443.34
  5. Step 5: Solve for x
    x = 10,234,322,443.34/128,110.48
  6. Step 6: Final answer
    x = 79,886.69

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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.