Home / 100,827.30-151,289.55-71,181.30

Finding the Fourth Proportional to 100,827.30, 151,289.55 and 71,181.30

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Solution

The fourth proportional to 100,827.30, 151,289.55 and 71,181.30 is: 106,806.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,827.30 : 151,289.55 = 71,181.30 : x
  2. Step 2: Convert to fraction form
    100,827.30/151,289.55 = 71,181.30/x
  3. Step 3: Cross multiply
    100,827.30x = 151,289.55 × 71,181.30
  4. Step 4: Simplify right side
    100,827.30x = 10,768,986,845.42
  5. Step 5: Solve for x
    x = 10,768,986,845.42/100,827.30
  6. Step 6: Final answer
    x = 106,806.26

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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.