Home / 198,119.79-297,189.41-79,775.15

Finding the Fourth Proportional to 198,119.79, 297,189.41 and 79,775.15

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Solution

The fourth proportional to 198,119.79, 297,189.41 and 79,775.15 is: 119,666.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,119.79 : 297,189.41 = 79,775.15 : x
  2. Step 2: Convert to fraction form
    198,119.79/297,189.41 = 79,775.15/x
  3. Step 3: Cross multiply
    198,119.79x = 297,189.41 × 79,775.15
  4. Step 4: Simplify right side
    198,119.79x = 23,708,327,876.34
  5. Step 5: Solve for x
    x = 23,708,327,876.34/198,119.79
  6. Step 6: Final answer
    x = 119,666.63

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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.