Home / 121,078.79-181,610.83-45,162.69

Finding the Fourth Proportional to 121,078.79, 181,610.83 and 45,162.69

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Solution

The fourth proportional to 121,078.79, 181,610.83 and 45,162.69 is: 67,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,078.79 : 181,610.83 = 45,162.69 : x
  2. Step 2: Convert to fraction form
    121,078.79/181,610.83 = 45,162.69/x
  3. Step 3: Cross multiply
    121,078.79x = 181,610.83 × 45,162.69
  4. Step 4: Simplify right side
    121,078.79x = 8,202,034,203.77
  5. Step 5: Solve for x
    x = 8,202,034,203.77/121,078.79
  6. Step 6: Final answer
    x = 67,741.30

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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.