Home / 198,743.40-297,920.70-98,821.80

Finding the Fourth Proportional to 198,743.40, 297,920.70 and 98,821.80

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Solution

The fourth proportional to 198,743.40, 297,920.70 and 98,821.80 is: 148,136.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,743.40 : 297,920.70 = 98,821.80 : x
  2. Step 2: Convert to fraction form
    198,743.40/297,920.70 = 98,821.80/x
  3. Step 3: Cross multiply
    198,743.40x = 297,920.70 × 98,821.80
  4. Step 4: Simplify right side
    198,743.40x = 29,441,059,831.26
  5. Step 5: Solve for x
    x = 29,441,059,831.26/198,743.40
  6. Step 6: Final answer
    x = 148,136.04

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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.