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Finding the Fourth Proportional to 125,516.80, 188,214.40 and 72,941.44

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Solution

The fourth proportional to 125,516.80, 188,214.40 and 72,941.44 is: 109,376.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,516.80 : 188,214.40 = 72,941.44 : x
  2. Step 2: Convert to fraction form
    125,516.80/188,214.40 = 72,941.44/x
  3. Step 3: Cross multiply
    125,516.80x = 188,214.40 × 72,941.44
  4. Step 4: Simplify right side
    125,516.80x = 13,728,629,364.74
  5. Step 5: Solve for x
    x = 13,728,629,364.74/125,516.80
  6. Step 6: Final answer
    x = 109,376.83

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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.