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Finding the Fourth Proportional to 108,265, 162,378.32 and 29,385.36

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Solution

The fourth proportional to 108,265, 162,378.32 and 29,385.36 is: 44,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,265 : 162,378.32 = 29,385.36 : x
  2. Step 2: Convert to fraction form
    108,265/162,378.32 = 29,385.36/x
  3. Step 3: Cross multiply
    108,265x = 162,378.32 × 29,385.36
  4. Step 4: Simplify right side
    108,265x = 4,771,545,389.40
  5. Step 5: Solve for x
    x = 4,771,545,389.40/108,265
  6. Step 6: Final answer
    x = 44,072.83

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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.