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Finding the Fourth Proportional to 159,205.02, 219,699.72 and 87,583.20

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Solution

The fourth proportional to 159,205.02, 219,699.72 and 87,583.20 is: 120,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,205.02 : 219,699.72 = 87,583.20 : x
  2. Step 2: Convert to fraction form
    159,205.02/219,699.72 = 87,583.20/x
  3. Step 3: Cross multiply
    159,205.02x = 219,699.72 × 87,583.20
  4. Step 4: Simplify right side
    159,205.02x = 19,242,004,516.70
  5. Step 5: Solve for x
    x = 19,242,004,516.70/159,205.02
  6. Step 6: Final answer
    x = 120,863.05

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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.