Home / 221,787.21-306,066.30-121,185.21

Finding the Fourth Proportional to 221,787.21, 306,066.30 and 121,185.21

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Solution

The fourth proportional to 221,787.21, 306,066.30 and 121,185.21 is: 167,235.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,787.21 : 306,066.30 = 121,185.21 : x
  2. Step 2: Convert to fraction form
    221,787.21/306,066.30 = 121,185.21/x
  3. Step 3: Cross multiply
    221,787.21x = 306,066.30 × 121,185.21
  4. Step 4: Simplify right side
    221,787.21x = 37,090,708,839.42
  5. Step 5: Solve for x
    x = 37,090,708,839.42/221,787.21
  6. Step 6: Final answer
    x = 167,235.56

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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.