Home / 128,500,688.94-192,821,756.13-55,718,028.78

Finding the Fourth Proportional to 128,500,688.94, 192,821,756.13 and 55,718,028.78

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Solution

The fourth proportional to 128,500,688.94, 192,821,756.13 and 55,718,028.78 is: 83,607,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,500,688.94 : 192,821,756.13 = 55,718,028.78 : x
  2. Step 2: Convert to fraction form
    128,500,688.94/192,821,756.13 = 55,718,028.78/x
  3. Step 3: Cross multiply
    128,500,688.94x = 192,821,756.13 × 55,718,028.78
  4. Step 4: Simplify right side
    128,500,688.94x = 10,743,648,157,461,482
  5. Step 5: Solve for x
    x = 10,743,648,157,461,482/128,500,688.94
  6. Step 6: Final answer
    x = 83,607,708.61

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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.