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Finding the Fourth Proportional to 125,565.60, 188,348.40 and 115,942.80

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Solution

The fourth proportional to 125,565.60, 188,348.40 and 115,942.80 is: 173,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,565.60 : 188,348.40 = 115,942.80 : x
  2. Step 2: Convert to fraction form
    125,565.60/188,348.40 = 115,942.80/x
  3. Step 3: Cross multiply
    125,565.60x = 188,348.40 × 115,942.80
  4. Step 4: Simplify right side
    125,565.60x = 21,837,640,871.52
  5. Step 5: Solve for x
    x = 21,837,640,871.52/125,565.60
  6. Step 6: Final answer
    x = 173,914.20

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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.