Home / 128,207.75-192,333.51-39,459.29

Finding the Fourth Proportional to 128,207.75, 192,333.51 and 39,459.29

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Solution

The fourth proportional to 128,207.75, 192,333.51 and 39,459.29 is: 59,195.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,207.75 : 192,333.51 = 39,459.29 : x
  2. Step 2: Convert to fraction form
    128,207.75/192,333.51 = 39,459.29/x
  3. Step 3: Cross multiply
    128,207.75x = 192,333.51 × 39,459.29
  4. Step 4: Simplify right side
    128,207.75x = 7,589,342,786.14
  5. Step 5: Solve for x
    x = 7,589,342,786.14/128,207.75
  6. Step 6: Final answer
    x = 59,195.67

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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.