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Finding the Fourth Proportional to 85,090.44, 127,709.42 and 84,893.64

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Solution

The fourth proportional to 85,090.44, 127,709.42 and 84,893.64 is: 127,414.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,090.44 : 127,709.42 = 84,893.64 : x
  2. Step 2: Convert to fraction form
    85,090.44/127,709.42 = 84,893.64/x
  3. Step 3: Cross multiply
    85,090.44x = 127,709.42 × 84,893.64
  4. Step 4: Simplify right side
    85,090.44x = 10,841,717,526.09
  5. Step 5: Solve for x
    x = 10,841,717,526.09/85,090.44
  6. Step 6: Final answer
    x = 127,414.05

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1.5x scale

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.