Home / 128,328.03-192,524.90-53,423.28

Finding the Fourth Proportional to 128,328.03, 192,524.90 and 53,423.28

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Solution

The fourth proportional to 128,328.03, 192,524.90 and 53,423.28 is: 80,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,328.03 : 192,524.90 = 53,423.28 : x
  2. Step 2: Convert to fraction form
    128,328.03/192,524.90 = 53,423.28/x
  3. Step 3: Cross multiply
    128,328.03x = 192,524.90 × 53,423.28
  4. Step 4: Simplify right side
    128,328.03x = 10,285,311,372.56
  5. Step 5: Solve for x
    x = 10,285,311,372.56/128,328.03
  6. Step 6: Final answer
    x = 80,148.60

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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.