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Finding the Fourth Proportional to 108,548.20, 162,822.30 and 73,118.80

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Solution

The fourth proportional to 108,548.20, 162,822.30 and 73,118.80 is: 109,678.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,548.20 : 162,822.30 = 73,118.80 : x
  2. Step 2: Convert to fraction form
    108,548.20/162,822.30 = 73,118.80/x
  3. Step 3: Cross multiply
    108,548.20x = 162,822.30 × 73,118.80
  4. Step 4: Simplify right side
    108,548.20x = 11,905,371,189.24
  5. Step 5: Solve for x
    x = 11,905,371,189.24/108,548.20
  6. Step 6: Final answer
    x = 109,678.20

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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.