Home / 128,581.05-192,902.37-53,659.53

Finding the Fourth Proportional to 128,581.05, 192,902.37 and 53,659.53

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Solution

The fourth proportional to 128,581.05, 192,902.37 and 53,659.53 is: 80,502.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,581.05 : 192,902.37 = 53,659.53 : x
  2. Step 2: Convert to fraction form
    128,581.05/192,902.37 = 53,659.53/x
  3. Step 3: Cross multiply
    128,581.05x = 192,902.37 × 53,659.53
  4. Step 4: Simplify right side
    128,581.05x = 10,351,050,510.09
  5. Step 5: Solve for x
    x = 10,351,050,510.09/128,581.05
  6. Step 6: Final answer
    x = 80,502.15

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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.