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Finding the Fourth Proportional to 159,173.12, 219,664.70 and 87,558.59

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Solution

The fourth proportional to 159,173.12, 219,664.70 and 87,558.59 is: 120,834.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,173.12 : 219,664.70 = 87,558.59 : x
  2. Step 2: Convert to fraction form
    159,173.12/219,664.70 = 87,558.59/x
  3. Step 3: Cross multiply
    159,173.12x = 219,664.70 × 87,558.59
  4. Step 4: Simplify right side
    159,173.12x = 19,233,529,868.66
  5. Step 5: Solve for x
    x = 19,233,529,868.66/159,173.12
  6. Step 6: Final answer
    x = 120,834.04

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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.