Home / 208,122.25-287,209.41-112,628.92

Finding the Fourth Proportional to 208,122.25, 287,209.41 and 112,628.92

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Solution

The fourth proportional to 208,122.25, 287,209.41 and 112,628.92 is: 155,428.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,122.25 : 287,209.41 = 112,628.92 : x
  2. Step 2: Convert to fraction form
    208,122.25/287,209.41 = 112,628.92/x
  3. Step 3: Cross multiply
    208,122.25x = 287,209.41 × 112,628.92
  4. Step 4: Simplify right side
    208,122.25x = 32,348,085,662.14
  5. Step 5: Solve for x
    x = 32,348,085,662.14/208,122.25
  6. Step 6: Final answer
    x = 155,428.29

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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.