Home / 220,938.56-331,364.40-86,003.12

Finding the Fourth Proportional to 220,938.56, 331,364.40 and 86,003.12

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Solution

The fourth proportional to 220,938.56, 331,364.40 and 86,003.12 is: 128,987.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,938.56 : 331,364.40 = 86,003.12 : x
  2. Step 2: Convert to fraction form
    220,938.56/331,364.40 = 86,003.12/x
  3. Step 3: Cross multiply
    220,938.56x = 331,364.40 × 86,003.12
  4. Step 4: Simplify right side
    220,938.56x = 28,498,372,256.93
  5. Step 5: Solve for x
    x = 28,498,372,256.93/220,938.56
  6. Step 6: Final answer
    x = 128,987.77

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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.