Home / 165,739.60-248,609.40-72,427.60

Finding the Fourth Proportional to 165,739.60, 248,609.40 and 72,427.60

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Solution

The fourth proportional to 165,739.60, 248,609.40 and 72,427.60 is: 108,641.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,739.60 : 248,609.40 = 72,427.60 : x
  2. Step 2: Convert to fraction form
    165,739.60/248,609.40 = 72,427.60/x
  3. Step 3: Cross multiply
    165,739.60x = 248,609.40 × 72,427.60
  4. Step 4: Simplify right side
    165,739.60x = 18,006,182,179.44
  5. Step 5: Solve for x
    x = 18,006,182,179.44/165,739.60
  6. Step 6: Final answer
    x = 108,641.40

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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.