Home / 221,105.46-305,126.55-125,617.39

Finding the Fourth Proportional to 221,105.46, 305,126.55 and 125,617.39

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Solution

The fourth proportional to 221,105.46, 305,126.55 and 125,617.39 is: 173,352.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,105.46 : 305,126.55 = 125,617.39 : x
  2. Step 2: Convert to fraction form
    221,105.46/305,126.55 = 125,617.39/x
  3. Step 3: Cross multiply
    221,105.46x = 305,126.55 × 125,617.39
  4. Step 4: Simplify right side
    221,105.46x = 38,329,200,830.70
  5. Step 5: Solve for x
    x = 38,329,200,830.70/221,105.46
  6. Step 6: Final answer
    x = 173,352.57

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1.5x scale

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.