Home / 121,280.37-181,835.91-53,775.51

Finding the Fourth Proportional to 121,280.37, 181,835.91 and 53,775.51

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Solution

The fourth proportional to 121,280.37, 181,835.91 and 53,775.51 is: 80,625.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,280.37 : 181,835.91 = 53,775.51 : x
  2. Step 2: Convert to fraction form
    121,280.37/181,835.91 = 53,775.51/x
  3. Step 3: Cross multiply
    121,280.37x = 181,835.91 × 53,775.51
  4. Step 4: Simplify right side
    121,280.37x = 9,778,318,796.56
  5. Step 5: Solve for x
    x = 9,778,318,796.56/121,280.37
  6. Step 6: Final answer
    x = 80,625.73

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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.