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Finding the Fourth Proportional to 101,245.23, 139,712.71 and 63,003.61

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Solution

The fourth proportional to 101,245.23, 139,712.71 and 63,003.61 is: 86,941.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,245.23 : 139,712.71 = 63,003.61 : x
  2. Step 2: Convert to fraction form
    101,245.23/139,712.71 = 63,003.61/x
  3. Step 3: Cross multiply
    101,245.23x = 139,712.71 × 63,003.61
  4. Step 4: Simplify right side
    101,245.23x = 8,802,405,092.88
  5. Step 5: Solve for x
    x = 8,802,405,092.88/101,245.23
  6. Step 6: Final answer
    x = 86,941.43

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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.