Home / 129,938.80-194,908.20-108,943.60

Finding the Fourth Proportional to 129,938.80, 194,908.20 and 108,943.60

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Solution

The fourth proportional to 129,938.80, 194,908.20 and 108,943.60 is: 163,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,938.80 : 194,908.20 = 108,943.60 : x
  2. Step 2: Convert to fraction form
    129,938.80/194,908.20 = 108,943.60/x
  3. Step 3: Cross multiply
    129,938.80x = 194,908.20 × 108,943.60
  4. Step 4: Simplify right side
    129,938.80x = 21,234,000,977.52
  5. Step 5: Solve for x
    x = 21,234,000,977.52/129,938.80
  6. Step 6: Final answer
    x = 163,415.40

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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.