Home / 100,779.88-151,178.20-30,659.80

Finding the Fourth Proportional to 100,779.88, 151,178.20 and 30,659.80

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Solution

The fourth proportional to 100,779.88, 151,178.20 and 30,659.80 is: 45,992.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,779.88 : 151,178.20 = 30,659.80 : x
  2. Step 2: Convert to fraction form
    100,779.88/151,178.20 = 30,659.80/x
  3. Step 3: Cross multiply
    100,779.88x = 151,178.20 × 30,659.80
  4. Step 4: Simplify right side
    100,779.88x = 4,635,093,376.36
  5. Step 5: Solve for x
    x = 4,635,093,376.36/100,779.88
  6. Step 6: Final answer
    x = 45,992.25

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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.