Home / 103,636.21-155,454.32-28,756.37

Finding the Fourth Proportional to 103,636.21, 155,454.32 and 28,756.37

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Solution

The fourth proportional to 103,636.21, 155,454.32 and 28,756.37 is: 43,134.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636.21 : 155,454.32 = 28,756.37 : x
  2. Step 2: Convert to fraction form
    103,636.21/155,454.32 = 28,756.37/x
  3. Step 3: Cross multiply
    103,636.21x = 155,454.32 × 28,756.37
  4. Step 4: Simplify right side
    103,636.21x = 4,470,301,944.02
  5. Step 5: Solve for x
    x = 4,470,301,944.02/103,636.21
  6. Step 6: Final answer
    x = 43,134.56

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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.