Home / 138,255.38-190,690.57-104,265.30

Finding the Fourth Proportional to 138,255.38, 190,690.57 and 104,265.30

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Solution

The fourth proportional to 138,255.38, 190,690.57 and 104,265.30 is: 143,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,255.38 : 190,690.57 = 104,265.30 : x
  2. Step 2: Convert to fraction form
    138,255.38/190,690.57 = 104,265.30/x
  3. Step 3: Cross multiply
    138,255.38x = 190,690.57 × 104,265.30
  4. Step 4: Simplify right side
    138,255.38x = 19,882,409,747.15
  5. Step 5: Solve for x
    x = 19,882,409,747.15/138,255.38
  6. Step 6: Final answer
    x = 143,809.30

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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.