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Finding the Fourth Proportional to 166,249.65, 249,210.45 and 81,940.80

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Solution

The fourth proportional to 166,249.65, 249,210.45 and 81,940.80 is: 122,830.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,249.65 : 249,210.45 = 81,940.80 : x
  2. Step 2: Convert to fraction form
    166,249.65/249,210.45 = 81,940.80/x
  3. Step 3: Cross multiply
    166,249.65x = 249,210.45 × 81,940.80
  4. Step 4: Simplify right side
    166,249.65x = 20,420,503,641.36
  5. Step 5: Solve for x
    x = 20,420,503,641.36/166,249.65
  6. Step 6: Final answer
    x = 122,830.36

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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.