Home / 166,633.20-249,731.10-66,711.60

Finding the Fourth Proportional to 166,633.20, 249,731.10 and 66,711.60

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Solution

The fourth proportional to 166,633.20, 249,731.10 and 66,711.60 is: 99,979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,633.20 : 249,731.10 = 66,711.60 : x
  2. Step 2: Convert to fraction form
    166,633.20/249,731.10 = 66,711.60/x
  3. Step 3: Cross multiply
    166,633.20x = 249,731.10 × 66,711.60
  4. Step 4: Simplify right side
    166,633.20x = 16,659,961,250.76
  5. Step 5: Solve for x
    x = 16,659,961,250.76/166,633.20
  6. Step 6: Final answer
    x = 99,979.84

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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.