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Finding the Fourth Proportional to 119,271, 164,594.30 and 66,279

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Solution

The fourth proportional to 119,271, 164,594.30 and 66,279 is: 91,465.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,271 : 164,594.30 = 66,279 : x
  2. Step 2: Convert to fraction form
    119,271/164,594.30 = 66,279/x
  3. Step 3: Cross multiply
    119,271x = 164,594.30 × 66,279
  4. Step 4: Simplify right side
    119,271x = 10,909,145,609.70
  5. Step 5: Solve for x
    x = 10,909,145,609.70/119,271
  6. Step 6: Final answer
    x = 91,465.20

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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.