Home / 141,886.78-195,812.58-78,224.48

Finding the Fourth Proportional to 141,886.78, 195,812.58 and 78,224.48

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Solution

The fourth proportional to 141,886.78, 195,812.58 and 78,224.48 is: 107,954.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,886.78 : 195,812.58 = 78,224.48 : x
  2. Step 2: Convert to fraction form
    141,886.78/195,812.58 = 78,224.48/x
  3. Step 3: Cross multiply
    141,886.78x = 195,812.58 × 78,224.48
  4. Step 4: Simplify right side
    141,886.78x = 15,317,337,247.96
  5. Step 5: Solve for x
    x = 15,317,337,247.96/141,886.78
  6. Step 6: Final answer
    x = 107,954.65

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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.