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Finding the Fourth Proportional to 142,879.17, 214,354.41 and 100,841.39

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Solution

The fourth proportional to 142,879.17, 214,354.41 and 100,841.39 is: 151,287.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,879.17 : 214,354.41 = 100,841.39 : x
  2. Step 2: Convert to fraction form
    142,879.17/214,354.41 = 100,841.39/x
  3. Step 3: Cross multiply
    142,879.17x = 214,354.41 × 100,841.39
  4. Step 4: Simplify right side
    142,879.17x = 21,615,796,657.03
  5. Step 5: Solve for x
    x = 21,615,796,657.03/142,879.17
  6. Step 6: Final answer
    x = 151,287.25

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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.