Home / 107,642.35-161,421.90-51,467.43

Finding the Fourth Proportional to 107,642.35, 161,421.90 and 51,467.43

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Solution

The fourth proportional to 107,642.35, 161,421.90 and 51,467.43 is: 77,181.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,642.35 : 161,421.90 = 51,467.43 : x
  2. Step 2: Convert to fraction form
    107,642.35/161,421.90 = 51,467.43/x
  3. Step 3: Cross multiply
    107,642.35x = 161,421.90 × 51,467.43
  4. Step 4: Simplify right side
    107,642.35x = 8,307,970,751.05
  5. Step 5: Solve for x
    x = 8,307,970,751.05/107,642.35
  6. Step 6: Final answer
    x = 77,181.25

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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.