Home / 104,821.20-157,231.80-69,829.20

Finding the Fourth Proportional to 104,821.20, 157,231.80 and 69,829.20

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Solution

The fourth proportional to 104,821.20, 157,231.80 and 69,829.20 is: 104,743.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,821.20 : 157,231.80 = 69,829.20 : x
  2. Step 2: Convert to fraction form
    104,821.20/157,231.80 = 69,829.20/x
  3. Step 3: Cross multiply
    104,821.20x = 157,231.80 × 69,829.20
  4. Step 4: Simplify right side
    104,821.20x = 10,979,370,808.56
  5. Step 5: Solve for x
    x = 10,979,370,808.56/104,821.20
  6. Step 6: Final answer
    x = 104,743.80

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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.