Home / 128,601.50-192,902.27-53,680.77

Finding the Fourth Proportional to 128,601.50, 192,902.27 and 53,680.77

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Solution

The fourth proportional to 128,601.50, 192,902.27 and 53,680.77 is: 80,521.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,601.50 : 192,902.27 = 53,680.77 : x
  2. Step 2: Convert to fraction form
    128,601.50/192,902.27 = 53,680.77/x
  3. Step 3: Cross multiply
    128,601.50x = 192,902.27 × 53,680.77
  4. Step 4: Simplify right side
    128,601.50x = 10,355,142,119.94
  5. Step 5: Solve for x
    x = 10,355,142,119.94/128,601.50
  6. Step 6: Final answer
    x = 80,521.16

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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.