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Finding the Fourth Proportional to 155,673.65, 214,801.09 and 87,676.07

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Solution

The fourth proportional to 155,673.65, 214,801.09 and 87,676.07 is: 120,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,673.65 : 214,801.09 = 87,676.07 : x
  2. Step 2: Convert to fraction form
    155,673.65/214,801.09 = 87,676.07/x
  3. Step 3: Cross multiply
    155,673.65x = 214,801.09 × 87,676.07
  4. Step 4: Simplify right side
    155,673.65x = 18,832,915,564.57
  5. Step 5: Solve for x
    x = 18,832,915,564.57/155,673.65
  6. Step 6: Final answer
    x = 120,976.90

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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.