Home / 159,947.90-239,779.26-81,021.50

Finding the Fourth Proportional to 159,947.90, 239,779.26 and 81,021.50

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Solution

The fourth proportional to 159,947.90, 239,779.26 and 81,021.50 is: 121,460.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,947.90 : 239,779.26 = 81,021.50 : x
  2. Step 2: Convert to fraction form
    159,947.90/239,779.26 = 81,021.50/x
  3. Step 3: Cross multiply
    159,947.90x = 239,779.26 × 81,021.50
  4. Step 4: Simplify right side
    159,947.90x = 19,427,275,314.09
  5. Step 5: Solve for x
    x = 19,427,275,314.09/159,947.90
  6. Step 6: Final answer
    x = 121,460.02

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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.