Home / 140,137.28-193,390.05-76,476.44

Finding the Fourth Proportional to 140,137.28, 193,390.05 and 76,476.44

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Solution

The fourth proportional to 140,137.28, 193,390.05 and 76,476.44 is: 105,537.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,137.28 : 193,390.05 = 76,476.44 : x
  2. Step 2: Convert to fraction form
    140,137.28/193,390.05 = 76,476.44/x
  3. Step 3: Cross multiply
    140,137.28x = 193,390.05 × 76,476.44
  4. Step 4: Simplify right side
    140,137.28x = 14,789,782,173.04
  5. Step 5: Solve for x
    x = 14,789,782,173.04/140,137.28
  6. Step 6: Final answer
    x = 105,537.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.