Home / 121,298.64-181,972.26-51,178.56

Finding the Fourth Proportional to 121,298.64, 181,972.26 and 51,178.56

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Solution

The fourth proportional to 121,298.64, 181,972.26 and 51,178.56 is: 76,778.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,298.64 : 181,972.26 = 51,178.56 : x
  2. Step 2: Convert to fraction form
    121,298.64/181,972.26 = 51,178.56/x
  3. Step 3: Cross multiply
    121,298.64x = 181,972.26 × 51,178.56
  4. Step 4: Simplify right side
    121,298.64x = 9,313,078,226.75
  5. Step 5: Solve for x
    x = 9,313,078,226.75/121,298.64
  6. Step 6: Final answer
    x = 76,778.09

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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.