Home / 128,569.46-192,816.95-38,608.54

Finding the Fourth Proportional to 128,569.46, 192,816.95 and 38,608.54

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Solution

The fourth proportional to 128,569.46, 192,816.95 and 38,608.54 is: 57,901.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,569.46 : 192,816.95 = 38,608.54 : x
  2. Step 2: Convert to fraction form
    128,569.46/192,816.95 = 38,608.54/x
  3. Step 3: Cross multiply
    128,569.46x = 192,816.95 × 38,608.54
  4. Step 4: Simplify right side
    128,569.46x = 7,444,380,251.67
  5. Step 5: Solve for x
    x = 7,444,380,251.67/128,569.46
  6. Step 6: Final answer
    x = 57,901.62

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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.