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Finding the Fourth Proportional to 125,620.80, 188,431.20 and 124,308.60

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Solution

The fourth proportional to 125,620.80, 188,431.20 and 124,308.60 is: 186,462.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,620.80 : 188,431.20 = 124,308.60 : x
  2. Step 2: Convert to fraction form
    125,620.80/188,431.20 = 124,308.60/x
  3. Step 3: Cross multiply
    125,620.80x = 188,431.20 × 124,308.60
  4. Step 4: Simplify right side
    125,620.80x = 23,423,618,668.32
  5. Step 5: Solve for x
    x = 23,423,618,668.32/125,620.80
  6. Step 6: Final answer
    x = 186,462.90

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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.