Home / 121,777.20-167,943.62-76,459.37

Finding the Fourth Proportional to 121,777.20, 167,943.62 and 76,459.37

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Solution

The fourth proportional to 121,777.20, 167,943.62 and 76,459.37 is: 105,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,777.20 : 167,943.62 = 76,459.37 : x
  2. Step 2: Convert to fraction form
    121,777.20/167,943.62 = 76,459.37/x
  3. Step 3: Cross multiply
    121,777.20x = 167,943.62 × 76,459.37
  4. Step 4: Simplify right side
    121,777.20x = 12,840,862,732.15
  5. Step 5: Solve for x
    x = 12,840,862,732.15/121,777.20
  6. Step 6: Final answer
    x = 105,445.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.