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Finding the Fourth Proportional to 104,980.89, 144,873.19 and 57,234.30

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Solution

The fourth proportional to 104,980.89, 144,873.19 and 57,234.30 is: 78,983.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,980.89 : 144,873.19 = 57,234.30 : x
  2. Step 2: Convert to fraction form
    104,980.89/144,873.19 = 57,234.30/x
  3. Step 3: Cross multiply
    104,980.89x = 144,873.19 × 57,234.30
  4. Step 4: Simplify right side
    104,980.89x = 8,291,715,146.69
  5. Step 5: Solve for x
    x = 8,291,715,146.69/104,980.89
  6. Step 6: Final answer
    x = 78,983.09

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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.