Home / 128,066.60-192,098.10-57,945.80

Finding the Fourth Proportional to 128,066.60, 192,098.10 and 57,945.80

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Solution

The fourth proportional to 128,066.60, 192,098.10 and 57,945.80 is: 86,917.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,066.60 : 192,098.10 = 57,945.80 : x
  2. Step 2: Convert to fraction form
    128,066.60/192,098.10 = 57,945.80/x
  3. Step 3: Cross multiply
    128,066.60x = 192,098.10 × 57,945.80
  4. Step 4: Simplify right side
    128,066.60x = 11,131,278,082.98
  5. Step 5: Solve for x
    x = 11,131,278,082.98/128,066.60
  6. Step 6: Final answer
    x = 86,917.89

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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.