Home / 140,169.89-193,431.39-76,508.75

Finding the Fourth Proportional to 140,169.89, 193,431.39 and 76,508.75

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Solution

The fourth proportional to 140,169.89, 193,431.39 and 76,508.75 is: 105,580.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,169.89 : 193,431.39 = 76,508.75 : x
  2. Step 2: Convert to fraction form
    140,169.89/193,431.39 = 76,508.75/x
  3. Step 3: Cross multiply
    140,169.89x = 193,431.39 × 76,508.75
  4. Step 4: Simplify right side
    140,169.89x = 14,799,193,859.66
  5. Step 5: Solve for x
    x = 14,799,193,859.66/140,169.89
  6. Step 6: Final answer
    x = 105,580.41

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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.