Home / 128,331.50-192,497.25-53,486.90

Finding the Fourth Proportional to 128,331.50, 192,497.25 and 53,486.90

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Solution

The fourth proportional to 128,331.50, 192,497.25 and 53,486.90 is: 80,230.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,331.50 : 192,497.25 = 53,486.90 : x
  2. Step 2: Convert to fraction form
    128,331.50/192,497.25 = 53,486.90/x
  3. Step 3: Cross multiply
    128,331.50x = 192,497.25 × 53,486.90
  4. Step 4: Simplify right side
    128,331.50x = 10,296,081,161.03
  5. Step 5: Solve for x
    x = 10,296,081,161.03/128,331.50
  6. Step 6: Final answer
    x = 80,230.35

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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.