Home / 100,735.10-139,014.53-55,416.54

Finding the Fourth Proportional to 100,735.10, 139,014.53 and 55,416.54

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Solution

The fourth proportional to 100,735.10, 139,014.53 and 55,416.54 is: 76,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,735.10 : 139,014.53 = 55,416.54 : x
  2. Step 2: Convert to fraction form
    100,735.10/139,014.53 = 55,416.54/x
  3. Step 3: Cross multiply
    100,735.10x = 139,014.53 × 55,416.54
  4. Step 4: Simplify right side
    100,735.10x = 7,703,704,262.33
  5. Step 5: Solve for x
    x = 7,703,704,262.33/100,735.10
  6. Step 6: Final answer
    x = 76,474.88

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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.