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Finding the Fourth Proportional to 125,855.40, 188,783.10 and 123,668.40

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Solution

The fourth proportional to 125,855.40, 188,783.10 and 123,668.40 is: 185,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,855.40 : 188,783.10 = 123,668.40 : x
  2. Step 2: Convert to fraction form
    125,855.40/188,783.10 = 123,668.40/x
  3. Step 3: Cross multiply
    125,855.40x = 188,783.10 × 123,668.40
  4. Step 4: Simplify right side
    125,855.40x = 23,346,503,924.04
  5. Step 5: Solve for x
    x = 23,346,503,924.04/125,855.40
  6. Step 6: Final answer
    x = 185,502.60

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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.