Home / 129,890.70-194,653.80-103,282.20

Finding the Fourth Proportional to 129,890.70, 194,653.80 and 103,282.20

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Solution

The fourth proportional to 129,890.70, 194,653.80 and 103,282.20 is: 154,778.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,890.70 : 194,653.80 = 103,282.20 : x
  2. Step 2: Convert to fraction form
    129,890.70/194,653.80 = 103,282.20/x
  3. Step 3: Cross multiply
    129,890.70x = 194,653.80 × 103,282.20
  4. Step 4: Simplify right side
    129,890.70x = 20,104,272,702.36
  5. Step 5: Solve for x
    x = 20,104,272,702.36/129,890.70
  6. Step 6: Final answer
    x = 154,778.38

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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.