Home / 166,121.70-249,012.45-81,752.10

Finding the Fourth Proportional to 166,121.70, 249,012.45 and 81,752.10

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Solution

The fourth proportional to 166,121.70, 249,012.45 and 81,752.10 is: 122,544.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,121.70 : 249,012.45 = 81,752.10 : x
  2. Step 2: Convert to fraction form
    166,121.70/249,012.45 = 81,752.10/x
  3. Step 3: Cross multiply
    166,121.70x = 249,012.45 × 81,752.10
  4. Step 4: Simplify right side
    166,121.70x = 20,357,290,713.65
  5. Step 5: Solve for x
    x = 20,357,290,713.65/166,121.70
  6. Step 6: Final answer
    x = 122,544.44

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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.