Home / 208,121.20-287,207.98-112,627.88

Finding the Fourth Proportional to 208,121.20, 287,207.98 and 112,627.88

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Solution

The fourth proportional to 208,121.20, 287,207.98 and 112,627.88 is: 155,426.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,121.20 : 287,207.98 = 112,627.88 : x
  2. Step 2: Convert to fraction form
    208,121.20/287,207.98 = 112,627.88/x
  3. Step 3: Cross multiply
    208,121.20x = 287,207.98 × 112,627.88
  4. Step 4: Simplify right side
    208,121.20x = 32,347,625,906.48
  5. Step 5: Solve for x
    x = 32,347,625,906.48/208,121.20
  6. Step 6: Final answer
    x = 155,426.87

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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.