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Finding the Fourth Proportional to 145,618.62, 200,958.48 and 85,195.62

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Solution

The fourth proportional to 145,618.62, 200,958.48 and 85,195.62 is: 117,572.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,618.62 : 200,958.48 = 85,195.62 : x
  2. Step 2: Convert to fraction form
    145,618.62/200,958.48 = 85,195.62/x
  3. Step 3: Cross multiply
    145,618.62x = 200,958.48 × 85,195.62
  4. Step 4: Simplify right side
    145,618.62x = 17,120,782,297.86
  5. Step 5: Solve for x
    x = 17,120,782,297.86/145,618.62
  6. Step 6: Final answer
    x = 117,572.75

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1.5x scale

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.