Home / 104,975.30-157,415.56-30,078.31

Finding the Fourth Proportional to 104,975.30, 157,415.56 and 30,078.31

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Solution

The fourth proportional to 104,975.30, 157,415.56 and 30,078.31 is: 45,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,975.30 : 157,415.56 = 30,078.31 : x
  2. Step 2: Convert to fraction form
    104,975.30/157,415.56 = 30,078.31/x
  3. Step 3: Cross multiply
    104,975.30x = 157,415.56 × 30,078.31
  4. Step 4: Simplify right side
    104,975.30x = 4,734,794,012.50
  5. Step 5: Solve for x
    x = 4,734,794,012.50/104,975.30
  6. Step 6: Final answer
    x = 45,103.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.