Home / 166,621.20-249,713.10-66,699.60

Finding the Fourth Proportional to 166,621.20, 249,713.10 and 66,699.60

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Solution

The fourth proportional to 166,621.20, 249,713.10 and 66,699.60 is: 99,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,621.20 : 249,713.10 = 66,699.60 : x
  2. Step 2: Convert to fraction form
    166,621.20/249,713.10 = 66,699.60/x
  3. Step 3: Cross multiply
    166,621.20x = 249,713.10 × 66,699.60
  4. Step 4: Simplify right side
    166,621.20x = 16,655,763,884.76
  5. Step 5: Solve for x
    x = 16,655,763,884.76/166,621.20
  6. Step 6: Final answer
    x = 99,961.85

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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.