Home / 208,021.50-287,067.96-112,528.44

Finding the Fourth Proportional to 208,021.50, 287,067.96 and 112,528.44

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Solution

The fourth proportional to 208,021.50, 287,067.96 and 112,528.44 is: 155,288.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,021.50 : 287,067.96 = 112,528.44 : x
  2. Step 2: Convert to fraction form
    208,021.50/287,067.96 = 112,528.44/x
  3. Step 3: Cross multiply
    208,021.50x = 287,067.96 × 112,528.44
  4. Step 4: Simplify right side
    208,021.50x = 32,303,309,712.78
  5. Step 5: Solve for x
    x = 32,303,309,712.78/208,021.50
  6. Step 6: Final answer
    x = 155,288.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.