Home / 140,078.40-193,300.68-79,640.76

Finding the Fourth Proportional to 140,078.40, 193,300.68 and 79,640.76

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Solution

The fourth proportional to 140,078.40, 193,300.68 and 79,640.76 is: 109,899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,078.40 : 193,300.68 = 79,640.76 : x
  2. Step 2: Convert to fraction form
    140,078.40/193,300.68 = 79,640.76/x
  3. Step 3: Cross multiply
    140,078.40x = 193,300.68 × 79,640.76
  4. Step 4: Simplify right side
    140,078.40x = 15,394,613,063.72
  5. Step 5: Solve for x
    x = 15,394,613,063.72/140,078.40
  6. Step 6: Final answer
    x = 109,899.98

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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.