Home / 103,786.32-143,198.76-63,485.36

Finding the Fourth Proportional to 103,786.32, 143,198.76 and 63,485.36

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Solution

The fourth proportional to 103,786.32, 143,198.76 and 63,485.36 is: 87,593.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,786.32 : 143,198.76 = 63,485.36 : x
  2. Step 2: Convert to fraction form
    103,786.32/143,198.76 = 63,485.36/x
  3. Step 3: Cross multiply
    103,786.32x = 143,198.76 × 63,485.36
  4. Step 4: Simplify right side
    103,786.32x = 9,091,024,830.15
  5. Step 5: Solve for x
    x = 9,091,024,830.15/103,786.32
  6. Step 6: Final answer
    x = 87,593.67

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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.