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Finding the Fourth Proportional to 188,283.79, 259,836.15 and 103,402.68

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Solution

The fourth proportional to 188,283.79, 259,836.15 and 103,402.68 is: 142,698.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,283.79 : 259,836.15 = 103,402.68 : x
  2. Step 2: Convert to fraction form
    188,283.79/259,836.15 = 103,402.68/x
  3. Step 3: Cross multiply
    188,283.79x = 259,836.15 × 103,402.68
  4. Step 4: Simplify right side
    188,283.79x = 26,867,754,270.88
  5. Step 5: Solve for x
    x = 26,867,754,270.88/188,283.79
  6. Step 6: Final answer
    x = 142,698.18

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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.