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Finding the Fourth Proportional to 159,969.70, 220,756.89 and 88,354.63

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Solution

The fourth proportional to 159,969.70, 220,756.89 and 88,354.63 is: 121,928.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,969.70 : 220,756.89 = 88,354.63 : x
  2. Step 2: Convert to fraction form
    159,969.70/220,756.89 = 88,354.63/x
  3. Step 3: Cross multiply
    159,969.70x = 220,756.89 × 88,354.63
  4. Step 4: Simplify right side
    159,969.70x = 19,504,893,335.90
  5. Step 5: Solve for x
    x = 19,504,893,335.90/159,969.70
  6. Step 6: Final answer
    x = 121,928.67

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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.