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Finding the Fourth Proportional to 188,555.77, 260,207.94 and 103,678.30

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Solution

The fourth proportional to 188,555.77, 260,207.94 and 103,678.30 is: 143,076.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,555.77 : 260,207.94 = 103,678.30 : x
  2. Step 2: Convert to fraction form
    188,555.77/260,207.94 = 103,678.30/x
  3. Step 3: Cross multiply
    188,555.77x = 260,207.94 × 103,678.30
  4. Step 4: Simplify right side
    188,555.77x = 26,977,916,865.70
  5. Step 5: Solve for x
    x = 26,977,916,865.70/188,555.77
  6. Step 6: Final answer
    x = 143,076.59

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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.