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Finding the Fourth Proportional to 165,855.20, 248,815.20 and 65,998.40

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Solution

The fourth proportional to 165,855.20, 248,815.20 and 65,998.40 is: 99,010.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,855.20 : 248,815.20 = 65,998.40 : x
  2. Step 2: Convert to fraction form
    165,855.20/248,815.20 = 65,998.40/x
  3. Step 3: Cross multiply
    165,855.20x = 248,815.20 × 65,998.40
  4. Step 4: Simplify right side
    165,855.20x = 16,421,405,095.68
  5. Step 5: Solve for x
    x = 16,421,405,095.68/165,855.20
  6. Step 6: Final answer
    x = 99,010.49

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1.5x scale

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.