Home / 128,334.68-192,529.49-38,384.45

Finding the Fourth Proportional to 128,334.68, 192,529.49 and 38,384.45

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Solution

The fourth proportional to 128,334.68, 192,529.49 and 38,384.45 is: 57,584.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,334.68 : 192,529.49 = 38,384.45 : x
  2. Step 2: Convert to fraction form
    128,334.68/192,529.49 = 38,384.45/x
  3. Step 3: Cross multiply
    128,334.68x = 192,529.49 × 38,384.45
  4. Step 4: Simplify right side
    128,334.68x = 7,390,138,365.76
  5. Step 5: Solve for x
    x = 7,390,138,365.76/128,334.68
  6. Step 6: Final answer
    x = 57,584.89

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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.