Home / 200,085,387.90-300,128,081.85-166,073,163.90

Finding the Fourth Proportional to 200,085,387.90, 300,128,081.85 and 166,073,163.90

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Solution

The fourth proportional to 200,085,387.90, 300,128,081.85 and 166,073,163.90 is: 249,109,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,085,387.90 : 300,128,081.85 = 166,073,163.90 : x
  2. Step 2: Convert to fraction form
    200,085,387.90/300,128,081.85 = 166,073,163.90/x
  3. Step 3: Cross multiply
    200,085,387.90x = 300,128,081.85 × 166,073,163.90
  4. Step 4: Simplify right side
    200,085,387.90x = 49,843,220,128,067,672
  5. Step 5: Solve for x
    x = 49,843,220,128,067,672/200,085,387.90
  6. Step 6: Final answer
    x = 249,109,745.85

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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.