Home / 107,649.48-161,427.15-54,308.64

Finding the Fourth Proportional to 107,649.48, 161,427.15 and 54,308.64

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Solution

The fourth proportional to 107,649.48, 161,427.15 and 54,308.64 is: 81,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,649.48 : 161,427.15 = 54,308.64 : x
  2. Step 2: Convert to fraction form
    107,649.48/161,427.15 = 54,308.64/x
  3. Step 3: Cross multiply
    107,649.48x = 161,427.15 × 54,308.64
  4. Step 4: Simplify right side
    107,649.48x = 8,766,888,975.58
  5. Step 5: Solve for x
    x = 8,766,888,975.58/107,649.48
  6. Step 6: Final answer
    x = 81,439.21

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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.