Home / 108,964.21-163,455.75-30,078.46

Finding the Fourth Proportional to 108,964.21, 163,455.75 and 30,078.46

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Solution

The fourth proportional to 108,964.21, 163,455.75 and 30,078.46 is: 45,120.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,964.21 : 163,455.75 = 30,078.46 : x
  2. Step 2: Convert to fraction form
    108,964.21/163,455.75 = 30,078.46/x
  3. Step 3: Cross multiply
    108,964.21x = 163,455.75 × 30,078.46
  4. Step 4: Simplify right side
    108,964.21x = 4,916,497,238.15
  5. Step 5: Solve for x
    x = 4,916,497,238.15/108,964.21
  6. Step 6: Final answer
    x = 45,120.29

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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.