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Finding the Fourth Proportional to 125,345.52, 188,015.64 and 30,576

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Solution

The fourth proportional to 125,345.52, 188,015.64 and 30,576 is: 45,863.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,345.52 : 188,015.64 = 30,576 : x
  2. Step 2: Convert to fraction form
    125,345.52/188,015.64 = 30,576/x
  3. Step 3: Cross multiply
    125,345.52x = 188,015.64 × 30,576
  4. Step 4: Simplify right side
    125,345.52x = 5,748,766,208.64
  5. Step 5: Solve for x
    x = 5,748,766,208.64/125,345.52
  6. Step 6: Final answer
    x = 45,863.36

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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.