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Finding the Fourth Proportional to 125,642.80, 188,464.20 and 124,330.60

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Solution

The fourth proportional to 125,642.80, 188,464.20 and 124,330.60 is: 186,495.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,642.80 : 188,464.20 = 124,330.60 : x
  2. Step 2: Convert to fraction form
    125,642.80/188,464.20 = 124,330.60/x
  3. Step 3: Cross multiply
    125,642.80x = 188,464.20 × 124,330.60
  4. Step 4: Simplify right side
    125,642.80x = 23,431,867,064.52
  5. Step 5: Solve for x
    x = 23,431,867,064.52/125,642.80
  6. Step 6: Final answer
    x = 186,495.90

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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.