Home / 128,109.90-192,239.73-92,536.14

Finding the Fourth Proportional to 128,109.90, 192,239.73 and 92,536.14

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Solution

The fourth proportional to 128,109.90, 192,239.73 and 92,536.14 is: 138,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,109.90 : 192,239.73 = 92,536.14 : x
  2. Step 2: Convert to fraction form
    128,109.90/192,239.73 = 92,536.14/x
  3. Step 3: Cross multiply
    128,109.90x = 192,239.73 × 92,536.14
  4. Step 4: Simplify right side
    128,109.90x = 17,789,122,568.84
  5. Step 5: Solve for x
    x = 17,789,122,568.84/128,109.90
  6. Step 6: Final answer
    x = 138,858.30

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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.