Home / 218,579.66-301,655.30-121,789.79

Finding the Fourth Proportional to 218,579.66, 301,655.30 and 121,789.79

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Solution

The fourth proportional to 218,579.66, 301,655.30 and 121,789.79 is: 168,078.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,579.66 : 301,655.30 = 121,789.79 : x
  2. Step 2: Convert to fraction form
    218,579.66/301,655.30 = 121,789.79/x
  3. Step 3: Cross multiply
    218,579.66x = 301,655.30 × 121,789.79
  4. Step 4: Simplify right side
    218,579.66x = 36,738,533,522.16
  5. Step 5: Solve for x
    x = 36,738,533,522.16/218,579.66
  6. Step 6: Final answer
    x = 168,078.47

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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.