Home / 128,544.55-192,771.66-38,560.43

Finding the Fourth Proportional to 128,544.55, 192,771.66 and 38,560.43

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Solution

The fourth proportional to 128,544.55, 192,771.66 and 38,560.43 is: 57,827.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,544.55 : 192,771.66 = 38,560.43 : x
  2. Step 2: Convert to fraction form
    128,544.55/192,771.66 = 38,560.43/x
  3. Step 3: Cross multiply
    128,544.55x = 192,771.66 × 38,560.43
  4. Step 4: Simplify right side
    128,544.55x = 7,433,358,101.41
  5. Step 5: Solve for x
    x = 7,433,358,101.41/128,544.55
  6. Step 6: Final answer
    x = 57,827.10

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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.