Home / 128,669.15-192,937.89-53,768.84

Finding the Fourth Proportional to 128,669.15, 192,937.89 and 53,768.84

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Solution

The fourth proportional to 128,669.15, 192,937.89 and 53,768.84 is: 80,625.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,669.15 : 192,937.89 = 53,768.84 : x
  2. Step 2: Convert to fraction form
    128,669.15/192,937.89 = 53,768.84/x
  3. Step 3: Cross multiply
    128,669.15x = 192,937.89 × 53,768.84
  4. Step 4: Simplify right side
    128,669.15x = 10,374,046,537.35
  5. Step 5: Solve for x
    x = 10,374,046,537.35/128,669.15
  6. Step 6: Final answer
    x = 80,625.75

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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.