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Finding the Fourth Proportional to 119,289.43, 164,619.60 and 65,574.79

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Solution

The fourth proportional to 119,289.43, 164,619.60 and 65,574.79 is: 90,493.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,289.43 : 164,619.60 = 65,574.79 : x
  2. Step 2: Convert to fraction form
    119,289.43/164,619.60 = 65,574.79/x
  3. Step 3: Cross multiply
    119,289.43x = 164,619.60 × 65,574.79
  4. Step 4: Simplify right side
    119,289.43x = 10,794,895,699.88
  5. Step 5: Solve for x
    x = 10,794,895,699.88/119,289.43
  6. Step 6: Final answer
    x = 90,493.31

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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.