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Finding the Fourth Proportional to 159,003.48, 219,424.96 and 87,381.96

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Solution

The fourth proportional to 159,003.48, 219,424.96 and 87,381.96 is: 120,587.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,003.48 : 219,424.96 = 87,381.96 : x
  2. Step 2: Convert to fraction form
    159,003.48/219,424.96 = 87,381.96/x
  3. Step 3: Cross multiply
    159,003.48x = 219,424.96 × 87,381.96
  4. Step 4: Simplify right side
    159,003.48x = 19,173,783,186.95
  5. Step 5: Solve for x
    x = 19,173,783,186.95/159,003.48
  6. Step 6: Final answer
    x = 120,587.19

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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.