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Finding the Fourth Proportional to 158,989.23, 219,410.37 and 87,374.70

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Solution

The fourth proportional to 158,989.23, 219,410.37 and 87,374.70 is: 120,579.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,989.23 : 219,410.37 = 87,374.70 : x
  2. Step 2: Convert to fraction form
    158,989.23/219,410.37 = 87,374.70/x
  3. Step 3: Cross multiply
    158,989.23x = 219,410.37 × 87,374.70
  4. Step 4: Simplify right side
    158,989.23x = 19,170,915,255.64
  5. Step 5: Solve for x
    x = 19,170,915,255.64/158,989.23
  6. Step 6: Final answer
    x = 120,579.96

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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.