Home / 198,912,851.20-298,369,276.80-145,165,139.20

Finding the Fourth Proportional to 198,912,851.20, 298,369,276.80 and 145,165,139.20

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Solution

The fourth proportional to 198,912,851.20, 298,369,276.80 and 145,165,139.20 is: 217,747,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,912,851.20 : 298,369,276.80 = 145,165,139.20 : x
  2. Step 2: Convert to fraction form
    198,912,851.20/298,369,276.80 = 145,165,139.20/x
  3. Step 3: Cross multiply
    198,912,851.20x = 298,369,276.80 × 145,165,139.20
  4. Step 4: Simplify right side
    198,912,851.20x = 43,312,817,599,675,328
  5. Step 5: Solve for x
    x = 43,312,817,599,675,328/198,912,851.20
  6. Step 6: Final answer
    x = 217,747,708.80

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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.