Home / 166,121.20-249,268.20-72,636.40

Finding the Fourth Proportional to 166,121.20, 249,268.20 and 72,636.40

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Solution

The fourth proportional to 166,121.20, 249,268.20 and 72,636.40 is: 108,992.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,121.20 : 249,268.20 = 72,636.40 : x
  2. Step 2: Convert to fraction form
    166,121.20/249,268.20 = 72,636.40/x
  3. Step 3: Cross multiply
    166,121.20x = 249,268.20 × 72,636.40
  4. Step 4: Simplify right side
    166,121.20x = 18,105,944,682.48
  5. Step 5: Solve for x
    x = 18,105,944,682.48/166,121.20
  6. Step 6: Final answer
    x = 108,992.38

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1.5x scale

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.