Home / 193,428,688.70-290,143,033.05-128,522,027.90

Finding the Fourth Proportional to 193,428,688.70, 290,143,033.05 and 128,522,027.90

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Solution

The fourth proportional to 193,428,688.70, 290,143,033.05 and 128,522,027.90 is: 192,783,041.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,428,688.70 : 290,143,033.05 = 128,522,027.90 : x
  2. Step 2: Convert to fraction form
    193,428,688.70/290,143,033.05 = 128,522,027.90/x
  3. Step 3: Cross multiply
    193,428,688.70x = 290,143,033.05 × 128,522,027.90
  4. Step 4: Simplify right side
    193,428,688.70x = 37,289,770,988,642,728
  5. Step 5: Solve for x
    x = 37,289,770,988,642,728/193,428,688.70
  6. Step 6: Final answer
    x = 192,783,041.85

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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.