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Finding the Fourth Proportional to 159,675.66, 220,355.60 and 103,185.45

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Solution

The fourth proportional to 159,675.66, 220,355.60 and 103,185.45 is: 142,397.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,675.66 : 220,355.60 = 103,185.45 : x
  2. Step 2: Convert to fraction form
    159,675.66/220,355.60 = 103,185.45/x
  3. Step 3: Cross multiply
    159,675.66x = 220,355.60 × 103,185.45
  4. Step 4: Simplify right side
    159,675.66x = 22,737,491,230.09
  5. Step 5: Solve for x
    x = 22,737,491,230.09/159,675.66
  6. Step 6: Final answer
    x = 142,397.98

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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.