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Finding the Fourth Proportional to 159,556.56, 220,182.84 and 87,935.28

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Solution

The fourth proportional to 159,556.56, 220,182.84 and 87,935.28 is: 121,347.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,556.56 : 220,182.84 = 87,935.28 : x
  2. Step 2: Convert to fraction form
    159,556.56/220,182.84 = 87,935.28/x
  3. Step 3: Cross multiply
    159,556.56x = 220,182.84 × 87,935.28
  4. Step 4: Simplify right side
    159,556.56x = 19,361,839,686.60
  5. Step 5: Solve for x
    x = 19,361,839,686.60/159,556.56
  6. Step 6: Final answer
    x = 121,347.81

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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.