Home / 208,115.05-287,198.77-112,621.74

Finding the Fourth Proportional to 208,115.05, 287,198.77 and 112,621.74

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Solution

The fourth proportional to 208,115.05, 287,198.77 and 112,621.74 is: 155,418.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,115.05 : 287,198.77 = 112,621.74 : x
  2. Step 2: Convert to fraction form
    208,115.05/287,198.77 = 112,621.74/x
  3. Step 3: Cross multiply
    208,115.05x = 287,198.77 × 112,621.74
  4. Step 4: Simplify right side
    208,115.05x = 32,344,825,203.26
  5. Step 5: Solve for x
    x = 32,344,825,203.26/208,115.05
  6. Step 6: Final answer
    x = 155,418.00

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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.