Home / 128,670.15-192,939.39-53,769.84

Finding the Fourth Proportional to 128,670.15, 192,939.39 and 53,769.84

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Solution

The fourth proportional to 128,670.15, 192,939.39 and 53,769.84 is: 80,627.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,670.15 : 192,939.39 = 53,769.84 : x
  2. Step 2: Convert to fraction form
    128,670.15/192,939.39 = 53,769.84/x
  3. Step 3: Cross multiply
    128,670.15x = 192,939.39 × 53,769.84
  4. Step 4: Simplify right side
    128,670.15x = 10,374,320,130.00
  5. Step 5: Solve for x
    x = 10,374,320,130.00/128,670.15
  6. Step 6: Final answer
    x = 80,627.25

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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.