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Finding the Fourth Proportional to 110,628.80, 165,910.80 and 51,450.20

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Solution

The fourth proportional to 110,628.80, 165,910.80 and 51,450.20 is: 77,160.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,628.80 : 165,910.80 = 51,450.20 : x
  2. Step 2: Convert to fraction form
    110,628.80/165,910.80 = 51,450.20/x
  3. Step 3: Cross multiply
    110,628.80x = 165,910.80 × 51,450.20
  4. Step 4: Simplify right side
    110,628.80x = 8,536,143,842.16
  5. Step 5: Solve for x
    x = 8,536,143,842.16/110,628.80
  6. Step 6: Final answer
    x = 77,160.23

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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.