Home / 119,025.20-178,538.81-30,278.78

Finding the Fourth Proportional to 119,025.20, 178,538.81 and 30,278.78

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Solution

The fourth proportional to 119,025.20, 178,538.81 and 30,278.78 is: 45,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,025.20 : 178,538.81 = 30,278.78 : x
  2. Step 2: Convert to fraction form
    119,025.20/178,538.81 = 30,278.78/x
  3. Step 3: Cross multiply
    119,025.20x = 178,538.81 × 30,278.78
  4. Step 4: Simplify right side
    119,025.20x = 5,405,937,349.45
  5. Step 5: Solve for x
    x = 5,405,937,349.45/119,025.20
  6. Step 6: Final answer
    x = 45,418.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.