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Finding the Fourth Proportional to 188,362.19, 259,939.92 and 103,484.72

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Solution

The fourth proportional to 188,362.19, 259,939.92 and 103,484.72 is: 142,808.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,362.19 : 259,939.92 = 103,484.72 : x
  2. Step 2: Convert to fraction form
    188,362.19/259,939.92 = 103,484.72/x
  3. Step 3: Cross multiply
    188,362.19x = 259,939.92 × 103,484.72
  4. Step 4: Simplify right side
    188,362.19x = 26,899,809,838.02
  5. Step 5: Solve for x
    x = 26,899,809,838.02/188,362.19
  6. Step 6: Final answer
    x = 142,808.97

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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.