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Finding the Fourth Proportional to 100,580.00, 138,748.34 and 68,316.28

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Solution

The fourth proportional to 100,580.00, 138,748.34 and 68,316.28 is: 94,241.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,580.00 : 138,748.34 = 68,316.28 : x
  2. Step 2: Convert to fraction form
    100,580.00/138,748.34 = 68,316.28/x
  3. Step 3: Cross multiply
    100,580.00x = 138,748.34 × 68,316.28
  4. Step 4: Simplify right side
    100,580.00x = 9,478,770,268.90
  5. Step 5: Solve for x
    x = 9,478,770,268.90/100,580.00
  6. Step 6: Final answer
    x = 94,241.11

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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.