Home / 215,109.47-322,373.48-81,917.07

Finding the Fourth Proportional to 215,109.47, 322,373.48 and 81,917.07

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Solution

The fourth proportional to 215,109.47, 322,373.48 and 81,917.07 is: 122,764.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,109.47 : 322,373.48 = 81,917.07 : x
  2. Step 2: Convert to fraction form
    215,109.47/322,373.48 = 81,917.07/x
  3. Step 3: Cross multiply
    215,109.47x = 322,373.48 × 81,917.07
  4. Step 4: Simplify right side
    215,109.47x = 26,407,890,927.30
  5. Step 5: Solve for x
    x = 26,407,890,927.30/215,109.47
  6. Step 6: Final answer
    x = 122,764.89

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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.