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Finding the Fourth Proportional to 119,165.28, 164,421.36 and 71,410.56

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Solution

The fourth proportional to 119,165.28, 164,421.36 and 71,410.56 is: 98,530.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,165.28 : 164,421.36 = 71,410.56 : x
  2. Step 2: Convert to fraction form
    119,165.28/164,421.36 = 71,410.56/x
  3. Step 3: Cross multiply
    119,165.28x = 164,421.36 × 71,410.56
  4. Step 4: Simplify right side
    119,165.28x = 11,741,421,393.56
  5. Step 5: Solve for x
    x = 11,741,421,393.56/119,165.28
  6. Step 6: Final answer
    x = 98,530.56

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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.