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Finding the Fourth Proportional to 125,701.60, 188,552.40 and 120,863.20

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Solution

The fourth proportional to 125,701.60, 188,552.40 and 120,863.20 is: 181,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,701.60 : 188,552.40 = 120,863.20 : x
  2. Step 2: Convert to fraction form
    125,701.60/188,552.40 = 120,863.20/x
  3. Step 3: Cross multiply
    125,701.60x = 188,552.40 × 120,863.20
  4. Step 4: Simplify right side
    125,701.60x = 22,789,046,431.68
  5. Step 5: Solve for x
    x = 22,789,046,431.68/125,701.60
  6. Step 6: Final answer
    x = 181,294.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.