Home / 149,244-205,890.12-100,830.36

Finding the Fourth Proportional to 149,244, 205,890.12 and 100,830.36

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Solution

The fourth proportional to 149,244, 205,890.12 and 100,830.36 is: 139,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,244 : 205,890.12 = 100,830.36 : x
  2. Step 2: Convert to fraction form
    149,244/205,890.12 = 100,830.36/x
  3. Step 3: Cross multiply
    149,244x = 205,890.12 × 100,830.36
  4. Step 4: Simplify right side
    149,244x = 20,759,974,920.04
  5. Step 5: Solve for x
    x = 20,759,974,920.04/149,244
  6. Step 6: Final answer
    x = 139,100.90

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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.