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Finding the Fourth Proportional to 147,376.60, 203,379.66 and 80,308.60

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Solution

The fourth proportional to 147,376.60, 203,379.66 and 80,308.60 is: 110,825.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,376.60 : 203,379.66 = 80,308.60 : x
  2. Step 2: Convert to fraction form
    147,376.60/203,379.66 = 80,308.60/x
  3. Step 3: Cross multiply
    147,376.60x = 203,379.66 × 80,308.60
  4. Step 4: Simplify right side
    147,376.60x = 16,333,135,763.08
  5. Step 5: Solve for x
    x = 16,333,135,763.08/147,376.60
  6. Step 6: Final answer
    x = 110,825.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.