Home / 198,726.50-298,089.96-80,398.88

Finding the Fourth Proportional to 198,726.50, 298,089.96 and 80,398.88

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Solution

The fourth proportional to 198,726.50, 298,089.96 and 80,398.88 is: 120,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,726.50 : 298,089.96 = 80,398.88 : x
  2. Step 2: Convert to fraction form
    198,726.50/298,089.96 = 80,398.88/x
  3. Step 3: Cross multiply
    198,726.50x = 298,089.96 × 80,398.88
  4. Step 4: Simplify right side
    198,726.50x = 23,966,098,923.24
  5. Step 5: Solve for x
    x = 23,966,098,923.24/198,726.50
  6. Step 6: Final answer
    x = 120,598.40

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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.