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Finding the Fourth Proportional to 159,855.31, 220,584.60 and 88,230.69

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Solution

The fourth proportional to 159,855.31, 220,584.60 and 88,230.69 is: 121,749.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,855.31 : 220,584.60 = 88,230.69 : x
  2. Step 2: Convert to fraction form
    159,855.31/220,584.60 = 88,230.69/x
  3. Step 3: Cross multiply
    159,855.31x = 220,584.60 × 88,230.69
  4. Step 4: Simplify right side
    159,855.31x = 19,462,331,461.37
  5. Step 5: Solve for x
    x = 19,462,331,461.37/159,855.31
  6. Step 6: Final answer
    x = 121,749.67

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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.