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Finding the Fourth Proportional to 104,098.80, 143,650.90 and 61,072.31

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Solution

The fourth proportional to 104,098.80, 143,650.90 and 61,072.31 is: 84,276.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,098.80 : 143,650.90 = 61,072.31 : x
  2. Step 2: Convert to fraction form
    104,098.80/143,650.90 = 61,072.31/x
  3. Step 3: Cross multiply
    104,098.80x = 143,650.90 × 61,072.31
  4. Step 4: Simplify right side
    104,098.80x = 8,773,092,732.05
  5. Step 5: Solve for x
    x = 8,773,092,732.05/104,098.80
  6. Step 6: Final answer
    x = 84,276.60

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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.