Home / 222,109.16-306,513.06-121,505

Finding the Fourth Proportional to 222,109.16, 306,513.06 and 121,505

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Solution

The fourth proportional to 222,109.16, 306,513.06 and 121,505 is: 167,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,109.16 : 306,513.06 = 121,505 : x
  2. Step 2: Convert to fraction form
    222,109.16/306,513.06 = 121,505/x
  3. Step 3: Cross multiply
    222,109.16x = 306,513.06 × 121,505
  4. Step 4: Simplify right side
    222,109.16x = 37,242,869,355.30
  5. Step 5: Solve for x
    x = 37,242,869,355.30/222,109.16
  6. Step 6: Final answer
    x = 167,678.22

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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.