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Finding the Fourth Proportional to 158,364.24, 218,481.84 and 90,384.96

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Solution

The fourth proportional to 158,364.24, 218,481.84 and 90,384.96 is: 124,696.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,364.24 : 218,481.84 = 90,384.96 : x
  2. Step 2: Convert to fraction form
    158,364.24/218,481.84 = 90,384.96/x
  3. Step 3: Cross multiply
    158,364.24x = 218,481.84 × 90,384.96
  4. Step 4: Simplify right side
    158,364.24x = 19,747,472,369.13
  5. Step 5: Solve for x
    x = 19,747,472,369.13/158,364.24
  6. Step 6: Final answer
    x = 124,696.54

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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.