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Finding the Fourth Proportional to 159,058.36, 219,500.46 and 87,443

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Solution

The fourth proportional to 159,058.36, 219,500.46 and 87,443 is: 120,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,058.36 : 219,500.46 = 87,443 : x
  2. Step 2: Convert to fraction form
    159,058.36/219,500.46 = 87,443/x
  3. Step 3: Cross multiply
    159,058.36x = 219,500.46 × 87,443
  4. Step 4: Simplify right side
    159,058.36x = 19,193,778,723.78
  5. Step 5: Solve for x
    x = 19,193,778,723.78/159,058.36
  6. Step 6: Final answer
    x = 120,671.30

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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.