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Finding the Fourth Proportional to 125,940.13, 188,984.00 and 90,363.10

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Solution

The fourth proportional to 125,940.13, 188,984.00 and 90,363.10 is: 135,597.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,940.13 : 188,984.00 = 90,363.10 : x
  2. Step 2: Convert to fraction form
    125,940.13/188,984.00 = 90,363.10/x
  3. Step 3: Cross multiply
    125,940.13x = 188,984.00 × 90,363.10
  4. Step 4: Simplify right side
    125,940.13x = 17,077,179,638.58
  5. Step 5: Solve for x
    x = 17,077,179,638.58/125,940.13
  6. Step 6: Final answer
    x = 135,597.61

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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.