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Finding the Fourth Proportional to 159,162.62, 219,641.09 and 87,541.47

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Solution

The fourth proportional to 159,162.62, 219,641.09 and 87,541.47 is: 120,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,162.62 : 219,641.09 = 87,541.47 : x
  2. Step 2: Convert to fraction form
    159,162.62/219,641.09 = 87,541.47/x
  3. Step 3: Cross multiply
    159,162.62x = 219,641.09 × 87,541.47
  4. Step 4: Simplify right side
    159,162.62x = 19,227,703,453.30
  5. Step 5: Solve for x
    x = 19,227,703,453.30/159,162.62
  6. Step 6: Final answer
    x = 120,805.40

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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.