Home / 127,690.22-191,704.62-109,089.78

Finding the Fourth Proportional to 127,690.22, 191,704.62 and 109,089.78

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Solution

The fourth proportional to 127,690.22, 191,704.62 and 109,089.78 is: 163,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,690.22 : 191,704.62 = 109,089.78 : x
  2. Step 2: Convert to fraction form
    127,690.22/191,704.62 = 109,089.78/x
  3. Step 3: Cross multiply
    127,690.22x = 191,704.62 × 109,089.78
  4. Step 4: Simplify right side
    127,690.22x = 20,913,014,820.78
  5. Step 5: Solve for x
    x = 20,913,014,820.78/127,690.22
  6. Step 6: Final answer
    x = 163,779.31

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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.