Home / 128,533-192,827.58-38,571.88

Finding the Fourth Proportional to 128,533, 192,827.58 and 38,571.88

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Solution

The fourth proportional to 128,533, 192,827.58 and 38,571.88 is: 57,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,533 : 192,827.58 = 38,571.88 : x
  2. Step 2: Convert to fraction form
    128,533/192,827.58 = 38,571.88/x
  3. Step 3: Cross multiply
    128,533x = 192,827.58 × 38,571.88
  4. Step 4: Simplify right side
    128,533x = 7,437,722,276.45
  5. Step 5: Solve for x
    x = 7,437,722,276.45/128,533
  6. Step 6: Final answer
    x = 57,866.25

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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.