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Finding the Fourth Proportional to 158,996.10, 219,404.01 and 87,374.58

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Solution

The fourth proportional to 158,996.10, 219,404.01 and 87,374.58 is: 120,571.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,996.10 : 219,404.01 = 87,374.58 : x
  2. Step 2: Convert to fraction form
    158,996.10/219,404.01 = 87,374.58/x
  3. Step 3: Cross multiply
    158,996.10x = 219,404.01 × 87,374.58
  4. Step 4: Simplify right side
    158,996.10x = 19,170,333,224.07
  5. Step 5: Solve for x
    x = 19,170,333,224.07/158,996.10
  6. Step 6: Final answer
    x = 120,571.09

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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.