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Finding the Fourth Proportional to 165,108.60, 247,006.80 and 143,165.70

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Solution

The fourth proportional to 165,108.60, 247,006.80 and 143,165.70 is: 214,179.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,108.60 : 247,006.80 = 143,165.70 : x
  2. Step 2: Convert to fraction form
    165,108.60/247,006.80 = 143,165.70/x
  3. Step 3: Cross multiply
    165,108.60x = 247,006.80 × 143,165.70
  4. Step 4: Simplify right side
    165,108.60x = 35,362,901,426.76
  5. Step 5: Solve for x
    x = 35,362,901,426.76/165,108.60
  6. Step 6: Final answer
    x = 214,179.65

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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.