Home / 128,151.18-192,245.22-39,412.17

Finding the Fourth Proportional to 128,151.18, 192,245.22 and 39,412.17

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Solution

The fourth proportional to 128,151.18, 192,245.22 and 39,412.17 is: 59,123.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.18 : 192,245.22 = 39,412.17 : x
  2. Step 2: Convert to fraction form
    128,151.18/192,245.22 = 39,412.17/x
  3. Step 3: Cross multiply
    128,151.18x = 192,245.22 × 39,412.17
  4. Step 4: Simplify right side
    128,151.18x = 7,576,801,292.33
  5. Step 5: Solve for x
    x = 7,576,801,292.33/128,151.18
  6. Step 6: Final answer
    x = 59,123.93

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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.