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Finding the Fourth Proportional to 108,347.20, 162,616.80 and 63,918.40

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Solution

The fourth proportional to 108,347.20, 162,616.80 and 63,918.40 is: 95,934.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,347.20 : 162,616.80 = 63,918.40 : x
  2. Step 2: Convert to fraction form
    108,347.20/162,616.80 = 63,918.40/x
  3. Step 3: Cross multiply
    108,347.20x = 162,616.80 × 63,918.40
  4. Step 4: Simplify right side
    108,347.20x = 10,394,205,669.12
  5. Step 5: Solve for x
    x = 10,394,205,669.12/108,347.20
  6. Step 6: Final answer
    x = 95,934.23

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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.