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Finding the Fourth Proportional to 108,528.96, 163,042.95 and 76,581.54

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Solution

The fourth proportional to 108,528.96, 163,042.95 and 76,581.54 is: 115,048.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,528.96 : 163,042.95 = 76,581.54 : x
  2. Step 2: Convert to fraction form
    108,528.96/163,042.95 = 76,581.54/x
  3. Step 3: Cross multiply
    108,528.96x = 163,042.95 × 76,581.54
  4. Step 4: Simplify right side
    108,528.96x = 12,486,080,197.14
  5. Step 5: Solve for x
    x = 12,486,080,197.14/108,528.96
  6. Step 6: Final answer
    x = 115,048.37

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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.