Home / 103,849.57-143,319.97-57,912.32

Finding the Fourth Proportional to 103,849.57, 143,319.97 and 57,912.32

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Solution

The fourth proportional to 103,849.57, 143,319.97 and 57,912.32 is: 79,923.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,849.57 : 143,319.97 = 57,912.32 : x
  2. Step 2: Convert to fraction form
    103,849.57/143,319.97 = 57,912.32/x
  3. Step 3: Cross multiply
    103,849.57x = 143,319.97 × 57,912.32
  4. Step 4: Simplify right side
    103,849.57x = 8,299,991,965.03
  5. Step 5: Solve for x
    x = 8,299,991,965.03/103,849.57
  6. Step 6: Final answer
    x = 79,923.22

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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.