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Finding the Fourth Proportional to 108,748.75, 163,186.63 and 45,563.47

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Solution

The fourth proportional to 108,748.75, 163,186.63 and 45,563.47 is: 68,371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,748.75 : 163,186.63 = 45,563.47 : x
  2. Step 2: Convert to fraction form
    108,748.75/163,186.63 = 45,563.47/x
  3. Step 3: Cross multiply
    108,748.75x = 163,186.63 × 45,563.47
  4. Step 4: Simplify right side
    108,748.75x = 7,435,349,120.41
  5. Step 5: Solve for x
    x = 7,435,349,120.41/108,748.75
  6. Step 6: Final answer
    x = 68,371.81

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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.