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Finding the Fourth Proportional to 104,249.73, 143,864.51 and 56,503.88

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Solution

The fourth proportional to 104,249.73, 143,864.51 and 56,503.88 is: 77,975.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,249.73 : 143,864.51 = 56,503.88 : x
  2. Step 2: Convert to fraction form
    104,249.73/143,864.51 = 56,503.88/x
  3. Step 3: Cross multiply
    104,249.73x = 143,864.51 × 56,503.88
  4. Step 4: Simplify right side
    104,249.73x = 8,128,902,546.95
  5. Step 5: Solve for x
    x = 8,128,902,546.95/104,249.73
  6. Step 6: Final answer
    x = 77,975.28

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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.