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Finding the Fourth Proportional to 159,172.57, 219,658.26 and 87,558.04

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Solution

The fourth proportional to 159,172.57, 219,658.26 and 87,558.04 is: 120,830.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,172.57 : 219,658.26 = 87,558.04 : x
  2. Step 2: Convert to fraction form
    159,172.57/219,658.26 = 87,558.04/x
  3. Step 3: Cross multiply
    159,172.57x = 219,658.26 × 87,558.04
  4. Step 4: Simplify right side
    159,172.57x = 19,232,846,715.41
  5. Step 5: Solve for x
    x = 19,232,846,715.41/159,172.57
  6. Step 6: Final answer
    x = 120,830.16

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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.