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Finding the Fourth Proportional to 159,001.11, 219,419.01 and 87,379.59

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Solution

The fourth proportional to 159,001.11, 219,419.01 and 87,379.59 is: 120,582.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,001.11 : 219,419.01 = 87,379.59 : x
  2. Step 2: Convert to fraction form
    159,001.11/219,419.01 = 87,379.59/x
  3. Step 3: Cross multiply
    159,001.11x = 219,419.01 × 87,379.59
  4. Step 4: Simplify right side
    159,001.11x = 19,172,743,954.83
  5. Step 5: Solve for x
    x = 19,172,743,954.83/159,001.11
  6. Step 6: Final answer
    x = 120,582.45

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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.