Home / 139,911.28-193,072.66-76,247.80

Finding the Fourth Proportional to 139,911.28, 193,072.66 and 76,247.80

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Solution

The fourth proportional to 139,911.28, 193,072.66 and 76,247.80 is: 105,219.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,911.28 : 193,072.66 = 76,247.80 : x
  2. Step 2: Convert to fraction form
    139,911.28/193,072.66 = 76,247.80/x
  3. Step 3: Cross multiply
    139,911.28x = 193,072.66 × 76,247.80
  4. Step 4: Simplify right side
    139,911.28x = 14,721,365,565.15
  5. Step 5: Solve for x
    x = 14,721,365,565.15/139,911.28
  6. Step 6: Final answer
    x = 105,219.29

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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.