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Finding the Fourth Proportional to 188,331.61, 259,899.45 and 103,448.68

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Solution

The fourth proportional to 188,331.61, 259,899.45 and 103,448.68 is: 142,760.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,331.61 : 259,899.45 = 103,448.68 : x
  2. Step 2: Convert to fraction form
    188,331.61/259,899.45 = 103,448.68/x
  3. Step 3: Cross multiply
    188,331.61x = 259,899.45 × 103,448.68
  4. Step 4: Simplify right side
    188,331.61x = 26,886,255,035.23
  5. Step 5: Solve for x
    x = 26,886,255,035.23/188,331.61
  6. Step 6: Final answer
    x = 142,760.18

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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.