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Finding the Fourth Proportional to 119,328.91, 178,989.31 and 30,583.29

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Solution

The fourth proportional to 119,328.91, 178,989.31 and 30,583.29 is: 45,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,328.91 : 178,989.31 = 30,583.29 : x
  2. Step 2: Convert to fraction form
    119,328.91/178,989.31 = 30,583.29/x
  3. Step 3: Cross multiply
    119,328.91x = 178,989.31 × 30,583.29
  4. Step 4: Simplify right side
    119,328.91x = 5,474,081,974.63
  5. Step 5: Solve for x
    x = 5,474,081,974.63/119,328.91
  6. Step 6: Final answer
    x = 45,873.90

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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.