Home / 125,771.20-188,656.80-42,665.92

Finding the Fourth Proportional to 125,771.20, 188,656.80 and 42,665.92

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Solution

The fourth proportional to 125,771.20, 188,656.80 and 42,665.92 is: 63,998.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,771.20 : 188,656.80 = 42,665.92 : x
  2. Step 2: Convert to fraction form
    125,771.20/188,656.80 = 42,665.92/x
  3. Step 3: Cross multiply
    125,771.20x = 188,656.80 × 42,665.92
  4. Step 4: Simplify right side
    125,771.20x = 8,049,215,936.26
  5. Step 5: Solve for x
    x = 8,049,215,936.26/125,771.20
  6. Step 6: Final answer
    x = 63,998.88

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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.