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Finding the Fourth Proportional to 171,490.70, 236,690.30 and 98,940.45

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Solution

The fourth proportional to 171,490.70, 236,690.30 and 98,940.45 is: 136,556.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,490.70 : 236,690.30 = 98,940.45 : x
  2. Step 2: Convert to fraction form
    171,490.70/236,690.30 = 98,940.45/x
  3. Step 3: Cross multiply
    171,490.70x = 236,690.30 × 98,940.45
  4. Step 4: Simplify right side
    171,490.70x = 23,418,245,927.57
  5. Step 5: Solve for x
    x = 23,418,245,927.57/171,490.70
  6. Step 6: Final answer
    x = 136,556.94

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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.