Home / 141,856.38-195,763.08-78,196.44

Finding the Fourth Proportional to 141,856.38, 195,763.08 and 78,196.44

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Solution

The fourth proportional to 141,856.38, 195,763.08 and 78,196.44 is: 107,911.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,856.38 : 195,763.08 = 78,196.44 : x
  2. Step 2: Convert to fraction form
    141,856.38/195,763.08 = 78,196.44/x
  3. Step 3: Cross multiply
    141,856.38x = 195,763.08 × 78,196.44
  4. Step 4: Simplify right side
    141,856.38x = 15,307,975,939.44
  5. Step 5: Solve for x
    x = 15,307,975,939.44/141,856.38
  6. Step 6: Final answer
    x = 107,911.79

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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.