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Finding the Fourth Proportional to 200,658.61, 276,813.48 and 120,069.91

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Solution

The fourth proportional to 200,658.61, 276,813.48 and 120,069.91 is: 165,639.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,658.61 : 276,813.48 = 120,069.91 : x
  2. Step 2: Convert to fraction form
    200,658.61/276,813.48 = 120,069.91/x
  3. Step 3: Cross multiply
    200,658.61x = 276,813.48 × 120,069.91
  4. Step 4: Simplify right side
    200,658.61x = 33,236,969,630.39
  5. Step 5: Solve for x
    x = 33,236,969,630.39/200,658.61
  6. Step 6: Final answer
    x = 165,639.39

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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.