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Finding the Fourth Proportional to 208,170.72, 287,275.08 and 112,676.64

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Solution

The fourth proportional to 208,170.72, 287,275.08 and 112,676.64 is: 155,493.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,170.72 : 287,275.08 = 112,676.64 : x
  2. Step 2: Convert to fraction form
    208,170.72/287,275.08 = 112,676.64/x
  3. Step 3: Cross multiply
    208,170.72x = 287,275.08 × 112,676.64
  4. Step 4: Simplify right side
    208,170.72x = 32,369,190,770.13
  5. Step 5: Solve for x
    x = 32,369,190,770.13/208,170.72
  6. Step 6: Final answer
    x = 155,493.49

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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.