Home / 208,121.25-287,208.03-112,627.92

Finding the Fourth Proportional to 208,121.25, 287,208.03 and 112,627.92

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Solution

The fourth proportional to 208,121.25, 287,208.03 and 112,627.92 is: 155,426.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,121.25 : 287,208.03 = 112,627.92 : x
  2. Step 2: Convert to fraction form
    208,121.25/287,208.03 = 112,627.92/x
  3. Step 3: Cross multiply
    208,121.25x = 287,208.03 × 112,627.92
  4. Step 4: Simplify right side
    208,121.25x = 32,347,643,026.20
  5. Step 5: Solve for x
    x = 32,347,643,026.20/208,121.25
  6. Step 6: Final answer
    x = 155,426.91

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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.