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Finding the Fourth Proportional to 159,815.50, 220,539.61 and 88,193.98

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Solution

The fourth proportional to 159,815.50, 220,539.61 and 88,193.98 is: 121,704.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,815.50 : 220,539.61 = 88,193.98 : x
  2. Step 2: Convert to fraction form
    159,815.50/220,539.61 = 88,193.98/x
  3. Step 3: Cross multiply
    159,815.50x = 220,539.61 × 88,193.98
  4. Step 4: Simplify right side
    159,815.50x = 19,450,266,339.46
  5. Step 5: Solve for x
    x = 19,450,266,339.46/159,815.50
  6. Step 6: Final answer
    x = 121,704.51

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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.