Home / 142,067.80-212,993.70-71,997.40

Finding the Fourth Proportional to 142,067.80, 212,993.70 and 71,997.40

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Solution

The fourth proportional to 142,067.80, 212,993.70 and 71,997.40 is: 107,941.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,067.80 : 212,993.70 = 71,997.40 : x
  2. Step 2: Convert to fraction form
    142,067.80/212,993.70 = 71,997.40/x
  3. Step 3: Cross multiply
    142,067.80x = 212,993.70 × 71,997.40
  4. Step 4: Simplify right side
    142,067.80x = 15,334,992,616.38
  5. Step 5: Solve for x
    x = 15,334,992,616.38/142,067.80
  6. Step 6: Final answer
    x = 107,941.37

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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.