Home / 223,603.12-308,579.20-121,636

Finding the Fourth Proportional to 223,603.12, 308,579.20 and 121,636

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Solution

The fourth proportional to 223,603.12, 308,579.20 and 121,636 is: 167,861.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,603.12 : 308,579.20 = 121,636 : x
  2. Step 2: Convert to fraction form
    223,603.12/308,579.20 = 121,636/x
  3. Step 3: Cross multiply
    223,603.12x = 308,579.20 × 121,636
  4. Step 4: Simplify right side
    223,603.12x = 37,534,339,571.20
  5. Step 5: Solve for x
    x = 37,534,339,571.20/223,603.12
  6. Step 6: Final answer
    x = 167,861.43

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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.