Home / 128,129.22-192,194.51-84,035.20

Finding the Fourth Proportional to 128,129.22, 192,194.51 and 84,035.20

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Solution

The fourth proportional to 128,129.22, 192,194.51 and 84,035.20 is: 126,053.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,129.22 : 192,194.51 = 84,035.20 : x
  2. Step 2: Convert to fraction form
    128,129.22/192,194.51 = 84,035.20/x
  3. Step 3: Cross multiply
    128,129.22x = 192,194.51 × 84,035.20
  4. Step 4: Simplify right side
    128,129.22x = 16,151,104,086.75
  5. Step 5: Solve for x
    x = 16,151,104,086.75/128,129.22
  6. Step 6: Final answer
    x = 126,053.25

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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.