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Finding the Fourth Proportional to 156,443.89, 215,891.26 and 88,474.21

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Solution

The fourth proportional to 156,443.89, 215,891.26 and 88,474.21 is: 122,093.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,443.89 : 215,891.26 = 88,474.21 : x
  2. Step 2: Convert to fraction form
    156,443.89/215,891.26 = 88,474.21/x
  3. Step 3: Cross multiply
    156,443.89x = 215,891.26 × 88,474.21
  4. Step 4: Simplify right side
    156,443.89x = 19,100,808,674.40
  5. Step 5: Solve for x
    x = 19,100,808,674.40/156,443.89
  6. Step 6: Final answer
    x = 122,093.67

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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.