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Finding the Fourth Proportional to 168,129.83, 232,019.46 and 91,649.54

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Solution

The fourth proportional to 168,129.83, 232,019.46 and 91,649.54 is: 126,476.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,129.83 : 232,019.46 = 91,649.54 : x
  2. Step 2: Convert to fraction form
    168,129.83/232,019.46 = 91,649.54/x
  3. Step 3: Cross multiply
    168,129.83x = 232,019.46 × 91,649.54
  4. Step 4: Simplify right side
    168,129.83x = 21,264,475,619.95
  5. Step 5: Solve for x
    x = 21,264,475,619.95/168,129.83
  6. Step 6: Final answer
    x = 126,476.52

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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.