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Finding the Fourth Proportional to 159,314.48, 219,852.30 and 87,692.96

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Solution

The fourth proportional to 159,314.48, 219,852.30 and 87,692.96 is: 121,015.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,314.48 : 219,852.30 = 87,692.96 : x
  2. Step 2: Convert to fraction form
    159,314.48/219,852.30 = 87,692.96/x
  3. Step 3: Cross multiply
    159,314.48x = 219,852.30 × 87,692.96
  4. Step 4: Simplify right side
    159,314.48x = 19,279,498,949.81
  5. Step 5: Solve for x
    x = 19,279,498,949.81/159,314.48
  6. Step 6: Final answer
    x = 121,015.36

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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.