Home / 129,985.70-194,796.30-103,377.20

Finding the Fourth Proportional to 129,985.70, 194,796.30 and 103,377.20

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Solution

The fourth proportional to 129,985.70, 194,796.30 and 103,377.20 is: 154,920.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,985.70 : 194,796.30 = 103,377.20 : x
  2. Step 2: Convert to fraction form
    129,985.70/194,796.30 = 103,377.20/x
  3. Step 3: Cross multiply
    129,985.70x = 194,796.30 × 103,377.20
  4. Step 4: Simplify right side
    129,985.70x = 20,137,496,064.36
  5. Step 5: Solve for x
    x = 20,137,496,064.36/129,985.70
  6. Step 6: Final answer
    x = 154,920.86

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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.