Home / 138,711.12-208,017.44-49,940.80

Finding the Fourth Proportional to 138,711.12, 208,017.44 and 49,940.80

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Solution

The fourth proportional to 138,711.12, 208,017.44 and 49,940.80 is: 74,893.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,711.12 : 208,017.44 = 49,940.80 : x
  2. Step 2: Convert to fraction form
    138,711.12/208,017.44 = 49,940.80/x
  3. Step 3: Cross multiply
    138,711.12x = 208,017.44 × 49,940.80
  4. Step 4: Simplify right side
    138,711.12x = 10,388,557,367.55
  5. Step 5: Solve for x
    x = 10,388,557,367.55/138,711.12
  6. Step 6: Final answer
    x = 74,893.47

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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.