Home / 221,838.75-306,145.04-121,243.23

Finding the Fourth Proportional to 221,838.75, 306,145.04 and 121,243.23

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Solution

The fourth proportional to 221,838.75, 306,145.04 and 121,243.23 is: 167,319.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,838.75 : 306,145.04 = 121,243.23 : x
  2. Step 2: Convert to fraction form
    221,838.75/306,145.04 = 121,243.23/x
  3. Step 3: Cross multiply
    221,838.75x = 306,145.04 × 121,243.23
  4. Step 4: Simplify right side
    221,838.75x = 37,118,012,891.86
  5. Step 5: Solve for x
    x = 37,118,012,891.86/221,838.75
  6. Step 6: Final answer
    x = 167,319.79

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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.