Home / 128,247.20-192,380.47-38,282.81

Finding the Fourth Proportional to 128,247.20, 192,380.47 and 38,282.81

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Solution

The fourth proportional to 128,247.20, 192,380.47 and 38,282.81 is: 57,427.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,247.20 : 192,380.47 = 38,282.81 : x
  2. Step 2: Convert to fraction form
    128,247.20/192,380.47 = 38,282.81/x
  3. Step 3: Cross multiply
    128,247.20x = 192,380.47 × 38,282.81
  4. Step 4: Simplify right side
    128,247.20x = 7,364,863,827.40
  5. Step 5: Solve for x
    x = 7,364,863,827.40/128,247.20
  6. Step 6: Final answer
    x = 57,427.09

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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.