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Finding the Fourth Proportional to 135,074.60, 202,320.30 and 87,835.40

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Solution

The fourth proportional to 135,074.60, 202,320.30 and 87,835.40 is: 131,563.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,074.60 : 202,320.30 = 87,835.40 : x
  2. Step 2: Convert to fraction form
    135,074.60/202,320.30 = 87,835.40/x
  3. Step 3: Cross multiply
    135,074.60x = 202,320.30 × 87,835.40
  4. Step 4: Simplify right side
    135,074.60x = 17,770,884,478.62
  5. Step 5: Solve for x
    x = 17,770,884,478.62/135,074.60
  6. Step 6: Final answer
    x = 131,563.48

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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.