Home / 107,420.20-160,976.70-79,119.40

Finding the Fourth Proportional to 107,420.20, 160,976.70 and 79,119.40

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Solution

The fourth proportional to 107,420.20, 160,976.70 and 79,119.40 is: 118,565.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,420.20 : 160,976.70 = 79,119.40 : x
  2. Step 2: Convert to fraction form
    107,420.20/160,976.70 = 79,119.40/x
  3. Step 3: Cross multiply
    107,420.20x = 160,976.70 × 79,119.40
  4. Step 4: Simplify right side
    107,420.20x = 12,736,379,917.98
  5. Step 5: Solve for x
    x = 12,736,379,917.98/107,420.20
  6. Step 6: Final answer
    x = 118,565.97

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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.