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Finding the Fourth Proportional to 188,279.64, 259,827.72 and 103,398.51

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Solution

The fourth proportional to 188,279.64, 259,827.72 and 103,398.51 is: 142,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,279.64 : 259,827.72 = 103,398.51 : x
  2. Step 2: Convert to fraction form
    188,279.64/259,827.72 = 103,398.51/x
  3. Step 3: Cross multiply
    188,279.64x = 259,827.72 × 103,398.51
  4. Step 4: Simplify right side
    188,279.64x = 26,865,799,104.70
  5. Step 5: Solve for x
    x = 26,865,799,104.70/188,279.64
  6. Step 6: Final answer
    x = 142,690.94

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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.