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Finding the Fourth Proportional to 147,730.50, 203,868.63 and 80,662.50

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Solution

The fourth proportional to 147,730.50, 203,868.63 and 80,662.50 is: 111,314.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,730.50 : 203,868.63 = 80,662.50 : x
  2. Step 2: Convert to fraction form
    147,730.50/203,868.63 = 80,662.50/x
  3. Step 3: Cross multiply
    147,730.50x = 203,868.63 × 80,662.50
  4. Step 4: Simplify right side
    147,730.50x = 16,444,553,367.38
  5. Step 5: Solve for x
    x = 16,444,553,367.38/147,730.50
  6. Step 6: Final answer
    x = 111,314.54

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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.