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Finding the Fourth Proportional to 108,407.75, 162,610.70 and 84,735.20

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Solution

The fourth proportional to 108,407.75, 162,610.70 and 84,735.20 is: 127,102.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,407.75 : 162,610.70 = 84,735.20 : x
  2. Step 2: Convert to fraction form
    108,407.75/162,610.70 = 84,735.20/x
  3. Step 3: Cross multiply
    108,407.75x = 162,610.70 × 84,735.20
  4. Step 4: Simplify right side
    108,407.75x = 13,778,848,949.91
  5. Step 5: Solve for x
    x = 13,778,848,949.91/108,407.75
  6. Step 6: Final answer
    x = 127,102.07

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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.