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Finding the Fourth Proportional to 100,929, 151,390.62 and 30,798.12

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Solution

The fourth proportional to 100,929, 151,390.62 and 30,798.12 is: 46,196.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,929 : 151,390.62 = 30,798.12 : x
  2. Step 2: Convert to fraction form
    100,929/151,390.62 = 30,798.12/x
  3. Step 3: Cross multiply
    100,929x = 151,390.62 × 30,798.12
  4. Step 4: Simplify right side
    100,929x = 4,662,546,481.63
  5. Step 5: Solve for x
    x = 4,662,546,481.63/100,929
  6. Step 6: Final answer
    x = 46,196.30

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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.