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Finding the Fourth Proportional to 108,546.10, 162,819.15 and 77,053.30

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Solution

The fourth proportional to 108,546.10, 162,819.15 and 77,053.30 is: 115,579.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,546.10 : 162,819.15 = 77,053.30 : x
  2. Step 2: Convert to fraction form
    108,546.10/162,819.15 = 77,053.30/x
  3. Step 3: Cross multiply
    108,546.10x = 162,819.15 × 77,053.30
  4. Step 4: Simplify right side
    108,546.10x = 12,545,752,810.70
  5. Step 5: Solve for x
    x = 12,545,752,810.70/108,546.10
  6. Step 6: Final answer
    x = 115,579.95

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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.