Home / 128,222,108.46-192,330,465.39-31,178,313.72

Finding the Fourth Proportional to 128,222,108.46, 192,330,465.39 and 31,178,313.72

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Solution

The fourth proportional to 128,222,108.46, 192,330,465.39 and 31,178,313.72 is: 46,766,814.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,222,108.46 : 192,330,465.39 = 31,178,313.72 : x
  2. Step 2: Convert to fraction form
    128,222,108.46/192,330,465.39 = 31,178,313.72/x
  3. Step 3: Cross multiply
    128,222,108.46x = 192,330,465.39 × 31,178,313.72
  4. Step 4: Simplify right side
    128,222,108.46x = 5,996,539,587,843,021
  5. Step 5: Solve for x
    x = 5,996,539,587,843,021/128,222,108.46
  6. Step 6: Final answer
    x = 46,766,814.71

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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.