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Finding the Fourth Proportional to 151,578.56, 209,178.88 and 84,512.96

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Solution

The fourth proportional to 151,578.56, 209,178.88 and 84,512.96 is: 116,628.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,578.56 : 209,178.88 = 84,512.96 : x
  2. Step 2: Convert to fraction form
    151,578.56/209,178.88 = 84,512.96/x
  3. Step 3: Cross multiply
    151,578.56x = 209,178.88 × 84,512.96
  4. Step 4: Simplify right side
    151,578.56x = 17,678,326,318.28
  5. Step 5: Solve for x
    x = 17,678,326,318.28/151,578.56
  6. Step 6: Final answer
    x = 116,628.15

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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.