Home / 145,023.25-217,540.78-69,082.75

Finding the Fourth Proportional to 145,023.25, 217,540.78 and 69,082.75

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Solution

The fourth proportional to 145,023.25, 217,540.78 and 69,082.75 is: 103,626.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,023.25 : 217,540.78 = 69,082.75 : x
  2. Step 2: Convert to fraction form
    145,023.25/217,540.78 = 69,082.75/x
  3. Step 3: Cross multiply
    145,023.25x = 217,540.78 × 69,082.75
  4. Step 4: Simplify right side
    145,023.25x = 15,028,316,086.41
  5. Step 5: Solve for x
    x = 15,028,316,086.41/145,023.25
  6. Step 6: Final answer
    x = 103,626.94

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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.