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Finding the Fourth Proportional to 188,606.40, 260,280 and 108,040.96

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Solution

The fourth proportional to 188,606.40, 260,280 and 108,040.96 is: 149,098.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,606.40 : 260,280 = 108,040.96 : x
  2. Step 2: Convert to fraction form
    188,606.40/260,280 = 108,040.96/x
  3. Step 3: Cross multiply
    188,606.40x = 260,280 × 108,040.96
  4. Step 4: Simplify right side
    188,606.40x = 28,120,901,068.80
  5. Step 5: Solve for x
    x = 28,120,901,068.80/188,606.40
  6. Step 6: Final answer
    x = 149,098.34

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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.