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Finding the Fourth Proportional to 159,638.51, 220,302.63 and 88,021.08

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Solution

The fourth proportional to 159,638.51, 220,302.63 and 88,021.08 is: 121,469.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,638.51 : 220,302.63 = 88,021.08 : x
  2. Step 2: Convert to fraction form
    159,638.51/220,302.63 = 88,021.08/x
  3. Step 3: Cross multiply
    159,638.51x = 220,302.63 × 88,021.08
  4. Step 4: Simplify right side
    159,638.51x = 19,391,275,419.44
  5. Step 5: Solve for x
    x = 19,391,275,419.44/159,638.51
  6. Step 6: Final answer
    x = 121,469.91

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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.