Home / 109,516.20-164,339.10-79,859.40

Finding the Fourth Proportional to 109,516.20, 164,339.10 and 79,859.40

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Solution

The fourth proportional to 109,516.20, 164,339.10 and 79,859.40 is: 119,836.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,516.20 : 164,339.10 = 79,859.40 : x
  2. Step 2: Convert to fraction form
    109,516.20/164,339.10 = 79,859.40/x
  3. Step 3: Cross multiply
    109,516.20x = 164,339.10 × 79,859.40
  4. Step 4: Simplify right side
    109,516.20x = 13,124,021,922.54
  5. Step 5: Solve for x
    x = 13,124,021,922.54/109,516.20
  6. Step 6: Final answer
    x = 119,836.35

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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.