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Finding the Fourth Proportional to 159,186.58, 219,676.25 and 87,565.03

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Solution

The fourth proportional to 159,186.58, 219,676.25 and 87,565.03 is: 120,839.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,186.58 : 219,676.25 = 87,565.03 : x
  2. Step 2: Convert to fraction form
    159,186.58/219,676.25 = 87,565.03/x
  3. Step 3: Cross multiply
    159,186.58x = 219,676.25 × 87,565.03
  4. Step 4: Simplify right side
    159,186.58x = 19,235,955,885.33
  5. Step 5: Solve for x
    x = 19,235,955,885.33/159,186.58
  6. Step 6: Final answer
    x = 120,839.06

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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.