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Finding the Fourth Proportional to 125,686.79, 188,530.23 and 36,940.31

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Solution

The fourth proportional to 125,686.79, 188,530.23 and 36,940.31 is: 55,410.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,686.79 : 188,530.23 = 36,940.31 : x
  2. Step 2: Convert to fraction form
    125,686.79/188,530.23 = 36,940.31/x
  3. Step 3: Cross multiply
    125,686.79x = 188,530.23 × 36,940.31
  4. Step 4: Simplify right side
    125,686.79x = 6,964,365,140.57
  5. Step 5: Solve for x
    x = 6,964,365,140.57/125,686.79
  6. Step 6: Final answer
    x = 55,410.48

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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.