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Finding the Fourth Proportional to 168,694,328.80, 253,041,493.20 and 100,669,880.80

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Solution

The fourth proportional to 168,694,328.80, 253,041,493.20 and 100,669,880.80 is: 151,004,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,694,328.80 : 253,041,493.20 = 100,669,880.80 : x
  2. Step 2: Convert to fraction form
    168,694,328.80/253,041,493.20 = 100,669,880.80/x
  3. Step 3: Cross multiply
    168,694,328.80x = 253,041,493.20 × 100,669,880.80
  4. Step 4: Simplify right side
    168,694,328.80x = 25,473,656,957,898,008
  5. Step 5: Solve for x
    x = 25,473,656,957,898,008/168,694,328.80
  6. Step 6: Final answer
    x = 151,004,821.20

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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.