Home / 128,245.50-192,405.51-53,351.82

Finding the Fourth Proportional to 128,245.50, 192,405.51 and 53,351.82

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Solution

The fourth proportional to 128,245.50, 192,405.51 and 53,351.82 is: 80,043.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,245.50 : 192,405.51 = 53,351.82 : x
  2. Step 2: Convert to fraction form
    128,245.50/192,405.51 = 53,351.82/x
  3. Step 3: Cross multiply
    128,245.50x = 192,405.51 × 53,351.82
  4. Step 4: Simplify right side
    128,245.50x = 10,265,184,136.53
  5. Step 5: Solve for x
    x = 10,265,184,136.53/128,245.50
  6. Step 6: Final answer
    x = 80,043.23

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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.