Home / 198,738.40-297,913.20-98,816.80

Finding the Fourth Proportional to 198,738.40, 297,913.20 and 98,816.80

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Solution

The fourth proportional to 198,738.40, 297,913.20 and 98,816.80 is: 148,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,738.40 : 297,913.20 = 98,816.80 : x
  2. Step 2: Convert to fraction form
    198,738.40/297,913.20 = 98,816.80/x
  3. Step 3: Cross multiply
    198,738.40x = 297,913.20 × 98,816.80
  4. Step 4: Simplify right side
    198,738.40x = 29,438,829,101.76
  5. Step 5: Solve for x
    x = 29,438,829,101.76/198,738.40
  6. Step 6: Final answer
    x = 148,128.54

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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.