Home / 137,280,284.12-189,450,491.66-80,768,974.74

Finding the Fourth Proportional to 137,280,284.12, 189,450,491.66 and 80,768,974.74

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Solution

The fourth proportional to 137,280,284.12, 189,450,491.66 and 80,768,974.74 is: 111,463,361.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,280,284.12 : 189,450,491.66 = 80,768,974.74 : x
  2. Step 2: Convert to fraction form
    137,280,284.12/189,450,491.66 = 80,768,974.74/x
  3. Step 3: Cross multiply
    137,280,284.12x = 189,450,491.66 × 80,768,974.74
  4. Step 4: Simplify right side
    137,280,284.12x = 15,301,721,974,555,720
  5. Step 5: Solve for x
    x = 15,301,721,974,555,720/137,280,284.12
  6. Step 6: Final answer
    x = 111,463,361.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.