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Finding the Fourth Proportional to 99,539.10, 149,107.05 and 61,983.90

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Solution

The fourth proportional to 99,539.10, 149,107.05 and 61,983.90 is: 92,850.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,539.10 : 149,107.05 = 61,983.90 : x
  2. Step 2: Convert to fraction form
    99,539.10/149,107.05 = 61,983.90/x
  3. Step 3: Cross multiply
    99,539.10x = 149,107.05 × 61,983.90
  4. Step 4: Simplify right side
    99,539.10x = 9,242,236,476.50
  5. Step 5: Solve for x
    x = 9,242,236,476.50/99,539.10
  6. Step 6: Final answer
    x = 92,850.31

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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.