Home / 128,185.93-192,347.75-53,357.73

Finding the Fourth Proportional to 128,185.93, 192,347.75 and 53,357.73

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Solution

The fourth proportional to 128,185.93, 192,347.75 and 53,357.73 is: 80,065.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185.93 : 192,347.75 = 53,357.73 : x
  2. Step 2: Convert to fraction form
    128,185.93/192,347.75 = 53,357.73/x
  3. Step 3: Cross multiply
    128,185.93x = 192,347.75 × 53,357.73
  4. Step 4: Simplify right side
    128,185.93x = 10,263,239,310.61
  5. Step 5: Solve for x
    x = 10,263,239,310.61/128,185.93
  6. Step 6: Final answer
    x = 80,065.26

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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.