Home / 198,220.80-297,331.20-139,123.20

Finding the Fourth Proportional to 198,220.80, 297,331.20 and 139,123.20

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Solution

The fourth proportional to 198,220.80, 297,331.20 and 139,123.20 is: 208,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,220.80 : 297,331.20 = 139,123.20 : x
  2. Step 2: Convert to fraction form
    198,220.80/297,331.20 = 139,123.20/x
  3. Step 3: Cross multiply
    198,220.80x = 297,331.20 × 139,123.20
  4. Step 4: Simplify right side
    198,220.80x = 41,365,668,003.84
  5. Step 5: Solve for x
    x = 41,365,668,003.84/198,220.80
  6. Step 6: Final answer
    x = 208,684.80

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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.