Home / 128,120.54-192,185.87-48,150.45

Finding the Fourth Proportional to 128,120.54, 192,185.87 and 48,150.45

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Solution

The fourth proportional to 128,120.54, 192,185.87 and 48,150.45 is: 72,227.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,120.54 : 192,185.87 = 48,150.45 : x
  2. Step 2: Convert to fraction form
    128,120.54/192,185.87 = 48,150.45/x
  3. Step 3: Cross multiply
    128,120.54x = 192,185.87 × 48,150.45
  4. Step 4: Simplify right side
    128,120.54x = 9,253,835,883.39
  5. Step 5: Solve for x
    x = 9,253,835,883.39/128,120.54
  6. Step 6: Final answer
    x = 72,227.58

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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.