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Finding the Fourth Proportional to 125,940.25, 188,984.18 and 90,363.22

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Solution

The fourth proportional to 125,940.25, 188,984.18 and 90,363.22 is: 135,597.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,940.25 : 188,984.18 = 90,363.22 : x
  2. Step 2: Convert to fraction form
    125,940.25/188,984.18 = 90,363.22/x
  3. Step 3: Cross multiply
    125,940.25x = 188,984.18 × 90,363.22
  4. Step 4: Simplify right side
    125,940.25x = 17,077,219,033.86
  5. Step 5: Solve for x
    x = 17,077,219,033.86/125,940.25
  6. Step 6: Final answer
    x = 135,597.79

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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.