Home / 140,678.03-194,135.73-77,019.86

Finding the Fourth Proportional to 140,678.03, 194,135.73 and 77,019.86

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Solution

The fourth proportional to 140,678.03, 194,135.73 and 77,019.86 is: 106,287.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,678.03 : 194,135.73 = 77,019.86 : x
  2. Step 2: Convert to fraction form
    140,678.03/194,135.73 = 77,019.86/x
  3. Step 3: Cross multiply
    140,678.03x = 194,135.73 × 77,019.86
  4. Step 4: Simplify right side
    140,678.03x = 14,952,306,745.60
  5. Step 5: Solve for x
    x = 14,952,306,745.60/140,678.03
  6. Step 6: Final answer
    x = 106,287.43

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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.