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Finding the Fourth Proportional to 168,847.50, 253,358.73 and 85,741.50

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Solution

The fourth proportional to 168,847.50, 253,358.73 and 85,741.50 is: 128,656.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,847.50 : 253,358.73 = 85,741.50 : x
  2. Step 2: Convert to fraction form
    168,847.50/253,358.73 = 85,741.50/x
  3. Step 3: Cross multiply
    168,847.50x = 253,358.73 × 85,741.50
  4. Step 4: Simplify right side
    168,847.50x = 21,723,357,548.30
  5. Step 5: Solve for x
    x = 21,723,357,548.30/168,847.50
  6. Step 6: Final answer
    x = 128,656.67

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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.