Home / 221,921.40-332,930.70-72,136.20

Finding the Fourth Proportional to 221,921.40, 332,930.70 and 72,136.20

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Solution

The fourth proportional to 221,921.40, 332,930.70 and 72,136.20 is: 108,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,921.40 : 332,930.70 = 72,136.20 : x
  2. Step 2: Convert to fraction form
    221,921.40/332,930.70 = 72,136.20/x
  3. Step 3: Cross multiply
    221,921.40x = 332,930.70 × 72,136.20
  4. Step 4: Simplify right side
    221,921.40x = 24,016,355,561.34
  5. Step 5: Solve for x
    x = 24,016,355,561.34/221,921.40
  6. Step 6: Final answer
    x = 108,220.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.