Home / 140,129.06-193,378.64-76,466.86

Finding the Fourth Proportional to 140,129.06, 193,378.64 and 76,466.86

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Solution

The fourth proportional to 140,129.06, 193,378.64 and 76,466.86 is: 105,524.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,129.06 : 193,378.64 = 76,466.86 : x
  2. Step 2: Convert to fraction form
    140,129.06/193,378.64 = 76,466.86/x
  3. Step 3: Cross multiply
    140,129.06x = 193,378.64 × 76,466.86
  4. Step 4: Simplify right side
    140,129.06x = 14,787,057,500.09
  5. Step 5: Solve for x
    x = 14,787,057,500.09/140,129.06
  6. Step 6: Final answer
    x = 105,524.56

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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.