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Finding the Fourth Proportional to 193,386.60, 290,131.10 and 68,714.60

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Solution

The fourth proportional to 193,386.60, 290,131.10 and 68,714.60 is: 103,090.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,386.60 : 290,131.10 = 68,714.60 : x
  2. Step 2: Convert to fraction form
    193,386.60/290,131.10 = 68,714.60/x
  3. Step 3: Cross multiply
    193,386.60x = 290,131.10 × 68,714.60
  4. Step 4: Simplify right side
    193,386.60x = 19,936,242,484.06
  5. Step 5: Solve for x
    x = 19,936,242,484.06/193,386.60
  6. Step 6: Final answer
    x = 103,090.09

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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.