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Finding the Fourth Proportional to 127,958.79, 176,526 and 74,212.68

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Solution

The fourth proportional to 127,958.79, 176,526 and 74,212.68 is: 102,380.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,958.79 : 176,526 = 74,212.68 : x
  2. Step 2: Convert to fraction form
    127,958.79/176,526 = 74,212.68/x
  3. Step 3: Cross multiply
    127,958.79x = 176,526 × 74,212.68
  4. Step 4: Simplify right side
    127,958.79x = 13,100,467,549.68
  5. Step 5: Solve for x
    x = 13,100,467,549.68/127,958.79
  6. Step 6: Final answer
    x = 102,380.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.