Home / 221,112.80-305,136.70-125,624.74

Finding the Fourth Proportional to 221,112.80, 305,136.70 and 125,624.74

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Solution

The fourth proportional to 221,112.80, 305,136.70 and 125,624.74 is: 173,362.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,112.80 : 305,136.70 = 125,624.74 : x
  2. Step 2: Convert to fraction form
    221,112.80/305,136.70 = 125,624.74/x
  3. Step 3: Cross multiply
    221,112.80x = 305,136.70 × 125,624.74
  4. Step 4: Simplify right side
    221,112.80x = 38,332,718,601.96
  5. Step 5: Solve for x
    x = 38,332,718,601.96/221,112.80
  6. Step 6: Final answer
    x = 173,362.73

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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.