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Finding the Fourth Proportional to 119,904.60, 180,124.20 and 100,221.60

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Solution

The fourth proportional to 119,904.60, 180,124.20 and 100,221.60 is: 150,555.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,904.60 : 180,124.20 = 100,221.60 : x
  2. Step 2: Convert to fraction form
    119,904.60/180,124.20 = 100,221.60/x
  3. Step 3: Cross multiply
    119,904.60x = 180,124.20 × 100,221.60
  4. Step 4: Simplify right side
    119,904.60x = 18,052,335,522.72
  5. Step 5: Solve for x
    x = 18,052,335,522.72/119,904.60
  6. Step 6: Final answer
    x = 150,555.82

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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.