Home / 208,121.08-287,207.10-112,627.80

Finding the Fourth Proportional to 208,121.08, 287,207.10 and 112,627.80

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Solution

The fourth proportional to 208,121.08, 287,207.10 and 112,627.80 is: 155,426.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,121.08 : 287,207.10 = 112,627.80 : x
  2. Step 2: Convert to fraction form
    208,121.08/287,207.10 = 112,627.80/x
  3. Step 3: Cross multiply
    208,121.08x = 287,207.10 × 112,627.80
  4. Step 4: Simplify right side
    208,121.08x = 32,347,503,817.38
  5. Step 5: Solve for x
    x = 32,347,503,817.38/208,121.08
  6. Step 6: Final answer
    x = 155,426.37

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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.