Home / 128,467.40-192,734.70-49,584.20

Finding the Fourth Proportional to 128,467.40, 192,734.70 and 49,584.20

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Solution

The fourth proportional to 128,467.40, 192,734.70 and 49,584.20 is: 74,389.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,467.40 : 192,734.70 = 49,584.20 : x
  2. Step 2: Convert to fraction form
    128,467.40/192,734.70 = 49,584.20/x
  3. Step 3: Cross multiply
    128,467.40x = 192,734.70 × 49,584.20
  4. Step 4: Simplify right side
    128,467.40x = 9,556,595,911.74
  5. Step 5: Solve for x
    x = 9,556,595,911.74/128,467.40
  6. Step 6: Final answer
    x = 74,389.27

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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.