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Finding the Fourth Proportional to 104,203.64, 143,784.78 and 61,755.32

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Solution

The fourth proportional to 104,203.64, 143,784.78 and 61,755.32 is: 85,212.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,203.64 : 143,784.78 = 61,755.32 : x
  2. Step 2: Convert to fraction form
    104,203.64/143,784.78 = 61,755.32/x
  3. Step 3: Cross multiply
    104,203.64x = 143,784.78 × 61,755.32
  4. Step 4: Simplify right side
    104,203.64x = 8,879,475,100.03
  5. Step 5: Solve for x
    x = 8,879,475,100.03/104,203.64
  6. Step 6: Final answer
    x = 85,212.72

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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.