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Finding the Fourth Proportional to 208,129.98, 287,227.60 and 117,489.18

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Solution

The fourth proportional to 208,129.98, 287,227.60 and 117,489.18 is: 162,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,129.98 : 287,227.60 = 117,489.18 : x
  2. Step 2: Convert to fraction form
    208,129.98/287,227.60 = 117,489.18/x
  3. Step 3: Cross multiply
    208,129.98x = 287,227.60 × 117,489.18
  4. Step 4: Simplify right side
    208,129.98x = 33,746,135,197.37
  5. Step 5: Solve for x
    x = 33,746,135,197.37/208,129.98
  6. Step 6: Final answer
    x = 162,139.71

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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.