Home / 109,428.20-164,207.10-79,771.40

Finding the Fourth Proportional to 109,428.20, 164,207.10 and 79,771.40

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Solution

The fourth proportional to 109,428.20, 164,207.10 and 79,771.40 is: 119,704.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,428.20 : 164,207.10 = 79,771.40 : x
  2. Step 2: Convert to fraction form
    109,428.20/164,207.10 = 79,771.40/x
  3. Step 3: Cross multiply
    109,428.20x = 164,207.10 × 79,771.40
  4. Step 4: Simplify right side
    109,428.20x = 13,099,030,256.94
  5. Step 5: Solve for x
    x = 13,099,030,256.94/109,428.20
  6. Step 6: Final answer
    x = 119,704.34

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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.