Home / 140,537.79-193,919.49-80,108.55

Finding the Fourth Proportional to 140,537.79, 193,919.49 and 80,108.55

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Solution

The fourth proportional to 140,537.79, 193,919.49 and 80,108.55 is: 110,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,537.79 : 193,919.49 = 80,108.55 : x
  2. Step 2: Convert to fraction form
    140,537.79/193,919.49 = 80,108.55/x
  3. Step 3: Cross multiply
    140,537.79x = 193,919.49 × 80,108.55
  4. Step 4: Simplify right side
    140,537.79x = 15,534,609,160.64
  5. Step 5: Solve for x
    x = 15,534,609,160.64/140,537.79
  6. Step 6: Final answer
    x = 110,536.88

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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.