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Finding the Fourth Proportional to 166,628.80, 249,748.80 and 66,739.60

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Solution

The fourth proportional to 166,628.80, 249,748.80 and 66,739.60 is: 100,031.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,628.80 : 249,748.80 = 66,739.60 : x
  2. Step 2: Convert to fraction form
    166,628.80/249,748.80 = 66,739.60/x
  3. Step 3: Cross multiply
    166,628.80x = 249,748.80 × 66,739.60
  4. Step 4: Simplify right side
    166,628.80x = 16,668,135,012.48
  5. Step 5: Solve for x
    x = 16,668,135,012.48/166,628.80
  6. Step 6: Final answer
    x = 100,031.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.