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Finding the Fourth Proportional to 120,469.20, 180,876.60 and 94,203.60

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Solution

The fourth proportional to 120,469.20, 180,876.60 and 94,203.60 is: 141,440.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,469.20 : 180,876.60 = 94,203.60 : x
  2. Step 2: Convert to fraction form
    120,469.20/180,876.60 = 94,203.60/x
  3. Step 3: Cross multiply
    120,469.20x = 180,876.60 × 94,203.60
  4. Step 4: Simplify right side
    120,469.20x = 17,039,226,875.76
  5. Step 5: Solve for x
    x = 17,039,226,875.76/120,469.20
  6. Step 6: Final answer
    x = 141,440.52

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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.