Home / 221,628.96-305,812.35-126,137.25

Finding the Fourth Proportional to 221,628.96, 305,812.35 and 126,137.25

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Solution

The fourth proportional to 221,628.96, 305,812.35 and 126,137.25 is: 174,049.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,628.96 : 305,812.35 = 126,137.25 : x
  2. Step 2: Convert to fraction form
    221,628.96/305,812.35 = 126,137.25/x
  3. Step 3: Cross multiply
    221,628.96x = 305,812.35 × 126,137.25
  4. Step 4: Simplify right side
    221,628.96x = 38,574,328,845.04
  5. Step 5: Solve for x
    x = 38,574,328,845.04/221,628.96
  6. Step 6: Final answer
    x = 174,049.14

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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.