Home / 129,977.40-194,966.10-122,104.20

Finding the Fourth Proportional to 129,977.40, 194,966.10 and 122,104.20

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Solution

The fourth proportional to 129,977.40, 194,966.10 and 122,104.20 is: 183,156.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,977.40 : 194,966.10 = 122,104.20 : x
  2. Step 2: Convert to fraction form
    129,977.40/194,966.10 = 122,104.20/x
  3. Step 3: Cross multiply
    129,977.40x = 194,966.10 × 122,104.20
  4. Step 4: Simplify right side
    129,977.40x = 23,806,179,667.62
  5. Step 5: Solve for x
    x = 23,806,179,667.62/129,977.40
  6. Step 6: Final answer
    x = 183,156.30

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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.