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Finding the Fourth Proportional to 104,345.97, 143,888.50 and 61,896.30

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Solution

The fourth proportional to 104,345.97, 143,888.50 and 61,896.30 is: 85,352.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,345.97 : 143,888.50 = 61,896.30 : x
  2. Step 2: Convert to fraction form
    104,345.97/143,888.50 = 61,896.30/x
  3. Step 3: Cross multiply
    104,345.97x = 143,888.50 × 61,896.30
  4. Step 4: Simplify right side
    104,345.97x = 8,906,165,762.55
  5. Step 5: Solve for x
    x = 8,906,165,762.55/104,345.97
  6. Step 6: Final answer
    x = 85,352.27

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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.