Home / 128,325,753.60-192,465,010.80-79,716,616.80

Finding the Fourth Proportional to 128,325,753.60, 192,465,010.80 and 79,716,616.80

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Solution

The fourth proportional to 128,325,753.60, 192,465,010.80 and 79,716,616.80 is: 119,560,252.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,325,753.60 : 192,465,010.80 = 79,716,616.80 : x
  2. Step 2: Convert to fraction form
    128,325,753.60/192,465,010.80 = 79,716,616.80/x
  3. Step 3: Cross multiply
    128,325,753.60x = 192,465,010.80 × 79,716,616.80
  4. Step 4: Simplify right side
    128,325,753.60x = 15,342,659,513,351,462
  5. Step 5: Solve for x
    x = 15,342,659,513,351,462/128,325,753.60
  6. Step 6: Final answer
    x = 119,560,252.58

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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.