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Finding the Fourth Proportional to 188,796.80, 260,503.62 and 120,761.66

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Solution

The fourth proportional to 188,796.80, 260,503.62 and 120,761.66 is: 166,628.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,796.80 : 260,503.62 = 120,761.66 : x
  2. Step 2: Convert to fraction form
    188,796.80/260,503.62 = 120,761.66/x
  3. Step 3: Cross multiply
    188,796.80x = 260,503.62 × 120,761.66
  4. Step 4: Simplify right side
    188,796.80x = 31,458,849,587.21
  5. Step 5: Solve for x
    x = 31,458,849,587.21/188,796.80
  6. Step 6: Final answer
    x = 166,628.09

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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.