Home / 141,856.22-195,779.31-81,445.79

Finding the Fourth Proportional to 141,856.22, 195,779.31 and 81,445.79

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Solution

The fourth proportional to 141,856.22, 195,779.31 and 81,445.79 is: 112,405.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,856.22 : 195,779.31 = 81,445.79 : x
  2. Step 2: Convert to fraction form
    141,856.22/195,779.31 = 81,445.79/x
  3. Step 3: Cross multiply
    141,856.22x = 195,779.31 × 81,445.79
  4. Step 4: Simplify right side
    141,856.22x = 15,945,400,568.60
  5. Step 5: Solve for x
    x = 15,945,400,568.60/141,856.22
  6. Step 6: Final answer
    x = 112,405.37

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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.