Home / 140,790.65-194,295.92-77,128.43

Finding the Fourth Proportional to 140,790.65, 194,295.92 and 77,128.43

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Solution

The fourth proportional to 140,790.65, 194,295.92 and 77,128.43 is: 106,439.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,790.65 : 194,295.92 = 77,128.43 : x
  2. Step 2: Convert to fraction form
    140,790.65/194,295.92 = 77,128.43/x
  3. Step 3: Cross multiply
    140,790.65x = 194,295.92 × 77,128.43
  4. Step 4: Simplify right side
    140,790.65x = 14,985,737,907.88
  5. Step 5: Solve for x
    x = 14,985,737,907.88/140,790.65
  6. Step 6: Final answer
    x = 106,439.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.