Home / 129,965.61-194,504.85-108,929.40

Finding the Fourth Proportional to 129,965.61, 194,504.85 and 108,929.40

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Solution

The fourth proportional to 129,965.61, 194,504.85 and 108,929.40 is: 163,022.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,965.61 : 194,504.85 = 108,929.40 : x
  2. Step 2: Convert to fraction form
    129,965.61/194,504.85 = 108,929.40/x
  3. Step 3: Cross multiply
    129,965.61x = 194,504.85 × 108,929.40
  4. Step 4: Simplify right side
    129,965.61x = 21,187,296,607.59
  5. Step 5: Solve for x
    x = 21,187,296,607.59/129,965.61
  6. Step 6: Final answer
    x = 163,022.33

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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.