Home / 193,428,689.70-290,143,034.55-128,522,028.90

Finding the Fourth Proportional to 193,428,689.70, 290,143,034.55 and 128,522,028.90

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Solution

The fourth proportional to 193,428,689.70, 290,143,034.55 and 128,522,028.90 is: 192,783,043.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,428,689.70 : 290,143,034.55 = 128,522,028.90 : x
  2. Step 2: Convert to fraction form
    193,428,689.70/290,143,034.55 = 128,522,028.90/x
  3. Step 3: Cross multiply
    193,428,689.70x = 290,143,034.55 × 128,522,028.90
  4. Step 4: Simplify right side
    193,428,689.70x = 37,289,771,471,568,800
  5. Step 5: Solve for x
    x = 37,289,771,471,568,800/193,428,689.70
  6. Step 6: Final answer
    x = 192,783,043.35

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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.