Home / 143,442.45-197,950.59-78,912.59

Finding the Fourth Proportional to 143,442.45, 197,950.59 and 78,912.59

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Solution

The fourth proportional to 143,442.45, 197,950.59 and 78,912.59 is: 108,899.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,442.45 : 197,950.59 = 78,912.59 : x
  2. Step 2: Convert to fraction form
    143,442.45/197,950.59 = 78,912.59/x
  3. Step 3: Cross multiply
    143,442.45x = 197,950.59 × 78,912.59
  4. Step 4: Simplify right side
    143,442.45x = 15,620,792,759.18
  5. Step 5: Solve for x
    x = 15,620,792,759.18/143,442.45
  6. Step 6: Final answer
    x = 108,899.37

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1.5x scale

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.