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Finding the Fourth Proportional to 135,999.40, 204,042.30 and 61,090.60

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Solution

The fourth proportional to 135,999.40, 204,042.30 and 61,090.60 is: 91,655.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,999.40 : 204,042.30 = 61,090.60 : x
  2. Step 2: Convert to fraction form
    135,999.40/204,042.30 = 61,090.60/x
  3. Step 3: Cross multiply
    135,999.40x = 204,042.30 × 61,090.60
  4. Step 4: Simplify right side
    135,999.40x = 12,465,066,532.38
  5. Step 5: Solve for x
    x = 12,465,066,532.38/135,999.40
  6. Step 6: Final answer
    x = 91,655.31

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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.