Home / 155,881.22-215,174.23-121,357.54

Finding the Fourth Proportional to 155,881.22, 215,174.23 and 121,357.54

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Solution

The fourth proportional to 155,881.22, 215,174.23 and 121,357.54 is: 167,518.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,881.22 : 215,174.23 = 121,357.54 : x
  2. Step 2: Convert to fraction form
    155,881.22/215,174.23 = 121,357.54/x
  3. Step 3: Cross multiply
    155,881.22x = 215,174.23 × 121,357.54
  4. Step 4: Simplify right side
    155,881.22x = 26,113,015,659.08
  5. Step 5: Solve for x
    x = 26,113,015,659.08/155,881.22
  6. Step 6: Final answer
    x = 167,518.68

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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.