Home / 100,950.24-139,319.20-55,636.35

Finding the Fourth Proportional to 100,950.24, 139,319.20 and 55,636.35

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Solution

The fourth proportional to 100,950.24, 139,319.20 and 55,636.35 is: 76,782.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,950.24 : 139,319.20 = 55,636.35 : x
  2. Step 2: Convert to fraction form
    100,950.24/139,319.20 = 55,636.35/x
  3. Step 3: Cross multiply
    100,950.24x = 139,319.20 × 55,636.35
  4. Step 4: Simplify right side
    100,950.24x = 7,751,211,772.92
  5. Step 5: Solve for x
    x = 7,751,211,772.92/100,950.24
  6. Step 6: Final answer
    x = 76,782.50

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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.