Home / 121,134.72-181,761.84-54,621.12

Finding the Fourth Proportional to 121,134.72, 181,761.84 and 54,621.12

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Solution

The fourth proportional to 121,134.72, 181,761.84 and 54,621.12 is: 81,958.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,134.72 : 181,761.84 = 54,621.12 : x
  2. Step 2: Convert to fraction form
    121,134.72/181,761.84 = 54,621.12/x
  3. Step 3: Cross multiply
    121,134.72x = 181,761.84 × 54,621.12
  4. Step 4: Simplify right side
    121,134.72x = 9,928,035,274.06
  5. Step 5: Solve for x
    x = 9,928,035,274.06/121,134.72
  6. Step 6: Final answer
    x = 81,958.63

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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.