Home / 218,685.22-301,795.67-121,895.42

Finding the Fourth Proportional to 218,685.22, 301,795.67 and 121,895.42

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Solution

The fourth proportional to 218,685.22, 301,795.67 and 121,895.42 is: 168,221.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,685.22 : 301,795.67 = 121,895.42 : x
  2. Step 2: Convert to fraction form
    218,685.22/301,795.67 = 121,895.42/x
  3. Step 3: Cross multiply
    218,685.22x = 301,795.67 × 121,895.42
  4. Step 4: Simplify right side
    218,685.22x = 36,787,508,744.59
  5. Step 5: Solve for x
    x = 36,787,508,744.59/218,685.22
  6. Step 6: Final answer
    x = 168,221.29

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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.