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Finding the Fourth Proportional to 104,171.34, 143,756.49 and 56,424.54

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Solution

The fourth proportional to 104,171.34, 143,756.49 and 56,424.54 is: 77,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,171.34 : 143,756.49 = 56,424.54 : x
  2. Step 2: Convert to fraction form
    104,171.34/143,756.49 = 56,424.54/x
  3. Step 3: Cross multiply
    104,171.34x = 143,756.49 × 56,424.54
  4. Step 4: Simplify right side
    104,171.34x = 8,111,393,820.26
  5. Step 5: Solve for x
    x = 8,111,393,820.26/104,171.34
  6. Step 6: Final answer
    x = 77,865.89

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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.