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Finding the Fourth Proportional to 104,172.34, 143,757.87 and 56,425.54

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Solution

The fourth proportional to 104,172.34, 143,757.87 and 56,425.54 is: 77,867.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,172.34 : 143,757.87 = 56,425.54 : x
  2. Step 2: Convert to fraction form
    104,172.34/143,757.87 = 56,425.54/x
  3. Step 3: Cross multiply
    104,172.34x = 143,757.87 × 56,425.54
  4. Step 4: Simplify right side
    104,172.34x = 8,111,615,444.00
  5. Step 5: Solve for x
    x = 8,111,615,444.00/104,172.34
  6. Step 6: Final answer
    x = 77,867.27

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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.