Home / 128,054.20-192,081.30-83,817.40

Finding the Fourth Proportional to 128,054.20, 192,081.30 and 83,817.40

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Solution

The fourth proportional to 128,054.20, 192,081.30 and 83,817.40 is: 125,726.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,054.20 : 192,081.30 = 83,817.40 : x
  2. Step 2: Convert to fraction form
    128,054.20/192,081.30 = 83,817.40/x
  3. Step 3: Cross multiply
    128,054.20x = 192,081.30 × 83,817.40
  4. Step 4: Simplify right side
    128,054.20x = 16,099,755,154.62
  5. Step 5: Solve for x
    x = 16,099,755,154.62/128,054.20
  6. Step 6: Final answer
    x = 125,726.10

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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.