Home / 128,048.20-192,102.63-43,809.28

Finding the Fourth Proportional to 128,048.20, 192,102.63 and 43,809.28

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Solution

The fourth proportional to 128,048.20, 192,102.63 and 43,809.28 is: 65,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,048.20 : 192,102.63 = 43,809.28 : x
  2. Step 2: Convert to fraction form
    128,048.20/192,102.63 = 43,809.28/x
  3. Step 3: Cross multiply
    128,048.20x = 192,102.63 × 43,809.28
  4. Step 4: Simplify right side
    128,048.20x = 8,415,877,906.41
  5. Step 5: Solve for x
    x = 8,415,877,906.41/128,048.20
  6. Step 6: Final answer
    x = 65,724.30

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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.