Home / 103,768.08-155,735.44-53,862.72

Finding the Fourth Proportional to 103,768.08, 155,735.44 and 53,862.72

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Solution

The fourth proportional to 103,768.08, 155,735.44 and 53,862.72 is: 80,837.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,768.08 : 155,735.44 = 53,862.72 : x
  2. Step 2: Convert to fraction form
    103,768.08/155,735.44 = 53,862.72/x
  3. Step 3: Cross multiply
    103,768.08x = 155,735.44 × 53,862.72
  4. Step 4: Simplify right side
    103,768.08x = 8,388,334,398.80
  5. Step 5: Solve for x
    x = 8,388,334,398.80/103,768.08
  6. Step 6: Final answer
    x = 80,837.33

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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.