Home / 141,771.06-195,643.94-78,108.86

Finding the Fourth Proportional to 141,771.06, 195,643.94 and 78,108.86

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Solution

The fourth proportional to 141,771.06, 195,643.94 and 78,108.86 is: 107,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,771.06 : 195,643.94 = 78,108.86 : x
  2. Step 2: Convert to fraction form
    141,771.06/195,643.94 = 78,108.86/x
  3. Step 3: Cross multiply
    141,771.06x = 195,643.94 × 78,108.86
  4. Step 4: Simplify right side
    141,771.06x = 15,281,523,750.54
  5. Step 5: Solve for x
    x = 15,281,523,750.54/141,771.06
  6. Step 6: Final answer
    x = 107,790.15

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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.