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Finding the Fourth Proportional to 501,008.72, 751,506.68 and 121,930.12

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Solution

The fourth proportional to 501,008.72, 751,506.68 and 121,930.12 is: 182,893.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,008.72 : 751,506.68 = 121,930.12 : x
  2. Step 2: Convert to fraction form
    501,008.72/751,506.68 = 121,930.12/x
  3. Step 3: Cross multiply
    501,008.72x = 751,506.68 × 121,930.12
  4. Step 4: Simplify right side
    501,008.72x = 91,631,299,673.20
  5. Step 5: Solve for x
    x = 91,631,299,673.20/501,008.72
  6. Step 6: Final answer
    x = 182,893.62

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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.