Home / 221,673.35-305,909.57-126,180.05

Finding the Fourth Proportional to 221,673.35, 305,909.57 and 126,180.05

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Solution

The fourth proportional to 221,673.35, 305,909.57 and 126,180.05 is: 174,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,673.35 : 305,909.57 = 126,180.05 : x
  2. Step 2: Convert to fraction form
    221,673.35/305,909.57 = 126,180.05/x
  3. Step 3: Cross multiply
    221,673.35x = 305,909.57 × 126,180.05
  4. Step 4: Simplify right side
    221,673.35x = 38,599,684,838.08
  5. Step 5: Solve for x
    x = 38,599,684,838.08/221,673.35
  6. Step 6: Final answer
    x = 174,128.67

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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.