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Finding the Fourth Proportional to 108,066, 149,148.36 and 63,354

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Solution

The fourth proportional to 108,066, 149,148.36 and 63,354 is: 87,438.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,066 : 149,148.36 = 63,354 : x
  2. Step 2: Convert to fraction form
    108,066/149,148.36 = 63,354/x
  3. Step 3: Cross multiply
    108,066x = 149,148.36 × 63,354
  4. Step 4: Simplify right side
    108,066x = 9,449,145,199.44
  5. Step 5: Solve for x
    x = 9,449,145,199.44/108,066
  6. Step 6: Final answer
    x = 87,438.65

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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.