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Finding the Fourth Proportional to 158,663.96, 218,942.32 and 90,667.44

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Solution

The fourth proportional to 158,663.96, 218,942.32 and 90,667.44 is: 125,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,663.96 : 218,942.32 = 90,667.44 : x
  2. Step 2: Convert to fraction form
    158,663.96/218,942.32 = 90,667.44/x
  3. Step 3: Cross multiply
    158,663.96x = 218,942.32 × 90,667.44
  4. Step 4: Simplify right side
    158,663.96x = 19,850,939,662.06
  5. Step 5: Solve for x
    x = 19,850,939,662.06/158,663.96
  6. Step 6: Final answer
    x = 125,113.10

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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.