Home / 128,111.40-192,241.98-92,537.64

Finding the Fourth Proportional to 128,111.40, 192,241.98 and 92,537.64

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Solution

The fourth proportional to 128,111.40, 192,241.98 and 92,537.64 is: 138,860.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,111.40 : 192,241.98 = 92,537.64 : x
  2. Step 2: Convert to fraction form
    128,111.40/192,241.98 = 92,537.64/x
  3. Step 3: Cross multiply
    128,111.40x = 192,241.98 × 92,537.64
  4. Step 4: Simplify right side
    128,111.40x = 17,789,619,138.13
  5. Step 5: Solve for x
    x = 17,789,619,138.13/128,111.40
  6. Step 6: Final answer
    x = 138,860.55

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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.