Home / 139,928.76-193,096.80-76,265.28

Finding the Fourth Proportional to 139,928.76, 193,096.80 and 76,265.28

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Solution

The fourth proportional to 139,928.76, 193,096.80 and 76,265.28 is: 105,243.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,928.76 : 193,096.80 = 76,265.28 : x
  2. Step 2: Convert to fraction form
    139,928.76/193,096.80 = 76,265.28/x
  3. Step 3: Cross multiply
    139,928.76x = 193,096.80 × 76,265.28
  4. Step 4: Simplify right side
    139,928.76x = 14,726,581,519.10
  5. Step 5: Solve for x
    x = 14,726,581,519.10/139,928.76
  6. Step 6: Final answer
    x = 105,243.42

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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.