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Finding the Fourth Proportional to 104,999.10, 143,739.51 and 104,248.68

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Solution

The fourth proportional to 104,999.10, 143,739.51 and 104,248.68 is: 142,712.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,999.10 : 143,739.51 = 104,248.68 : x
  2. Step 2: Convert to fraction form
    104,999.10/143,739.51 = 104,248.68/x
  3. Step 3: Cross multiply
    104,999.10x = 143,739.51 × 104,248.68
  4. Step 4: Simplify right side
    104,999.10x = 14,984,654,181.35
  5. Step 5: Solve for x
    x = 14,984,654,181.35/104,999.10
  6. Step 6: Final answer
    x = 142,712.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.