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Finding the Fourth Proportional to 100,940.44, 139,295.99 and 55,622.63

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Solution

The fourth proportional to 100,940.44, 139,295.99 and 55,622.63 is: 76,758.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,940.44 : 139,295.99 = 55,622.63 : x
  2. Step 2: Convert to fraction form
    100,940.44/139,295.99 = 55,622.63/x
  3. Step 3: Cross multiply
    100,940.44x = 139,295.99 × 55,622.63
  4. Step 4: Simplify right side
    100,940.44x = 7,748,008,337.66
  5. Step 5: Solve for x
    x = 7,748,008,337.66/100,940.44
  6. Step 6: Final answer
    x = 76,758.22

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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.