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Finding the Fourth Proportional to 108,575, 149,842.18 and 63,871.64

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Solution

The fourth proportional to 108,575, 149,842.18 and 63,871.64 is: 88,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,575 : 149,842.18 = 63,871.64 : x
  2. Step 2: Convert to fraction form
    108,575/149,842.18 = 63,871.64/x
  3. Step 3: Cross multiply
    108,575x = 149,842.18 × 63,871.64
  4. Step 4: Simplify right side
    108,575x = 9,570,665,777.78
  5. Step 5: Solve for x
    x = 9,570,665,777.78/108,575
  6. Step 6: Final answer
    x = 88,147.97

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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.