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Finding the Fourth Proportional to 159,100.94, 219,559.26 and 87,485.60

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Solution

The fourth proportional to 159,100.94, 219,559.26 and 87,485.60 is: 120,730.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,100.94 : 219,559.26 = 87,485.60 : x
  2. Step 2: Convert to fraction form
    159,100.94/219,559.26 = 87,485.60/x
  3. Step 3: Cross multiply
    159,100.94x = 219,559.26 × 87,485.60
  4. Step 4: Simplify right side
    159,100.94x = 19,208,273,596.66
  5. Step 5: Solve for x
    x = 19,208,273,596.66/159,100.94
  6. Step 6: Final answer
    x = 120,730.11

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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.