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Finding the Fourth Proportional to 159,486.33, 220,101.05 and 87,866.33

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Solution

The fourth proportional to 159,486.33, 220,101.05 and 87,866.33 is: 121,261.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,486.33 : 220,101.05 = 87,866.33 : x
  2. Step 2: Convert to fraction form
    159,486.33/220,101.05 = 87,866.33/x
  3. Step 3: Cross multiply
    159,486.33x = 220,101.05 × 87,866.33
  4. Step 4: Simplify right side
    159,486.33x = 19,339,472,262.57
  5. Step 5: Solve for x
    x = 19,339,472,262.57/159,486.33
  6. Step 6: Final answer
    x = 121,261.00

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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.