Home / 218,629.56-301,718.12-121,833.52

Finding the Fourth Proportional to 218,629.56, 301,718.12 and 121,833.52

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Solution

The fourth proportional to 218,629.56, 301,718.12 and 121,833.52 is: 168,135.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,629.56 : 301,718.12 = 121,833.52 : x
  2. Step 2: Convert to fraction form
    218,629.56/301,718.12 = 121,833.52/x
  3. Step 3: Cross multiply
    218,629.56x = 301,718.12 × 121,833.52
  4. Step 4: Simplify right side
    218,629.56x = 36,759,380,607.38
  5. Step 5: Solve for x
    x = 36,759,380,607.38/218,629.56
  6. Step 6: Final answer
    x = 168,135.46

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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.