Home / 128,544.48-192,481.38-103,447.44

Finding the Fourth Proportional to 128,544.48, 192,481.38 and 103,447.44

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Solution

The fourth proportional to 128,544.48, 192,481.38 and 103,447.44 is: 154,901.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,544.48 : 192,481.38 = 103,447.44 : x
  2. Step 2: Convert to fraction form
    128,544.48/192,481.38 = 103,447.44/x
  3. Step 3: Cross multiply
    128,544.48x = 192,481.38 × 103,447.44
  4. Step 4: Simplify right side
    128,544.48x = 19,911,706,008.67
  5. Step 5: Solve for x
    x = 19,911,706,008.67/128,544.48
  6. Step 6: Final answer
    x = 154,901.29

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1.5x scale

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.