Home / 109,949.21-151,651.71-100,903.80

Finding the Fourth Proportional to 109,949.21, 151,651.71 and 100,903.80

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Solution

The fourth proportional to 109,949.21, 151,651.71 and 100,903.80 is: 139,175.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,949.21 : 151,651.71 = 100,903.80 : x
  2. Step 2: Convert to fraction form
    109,949.21/151,651.71 = 100,903.80/x
  3. Step 3: Cross multiply
    109,949.21x = 151,651.71 × 100,903.80
  4. Step 4: Simplify right side
    109,949.21x = 15,302,234,384.19
  5. Step 5: Solve for x
    x = 15,302,234,384.19/109,949.21
  6. Step 6: Final answer
    x = 139,175.48

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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.