Home / 145,023.40-217,540.99-69,082.90

Finding the Fourth Proportional to 145,023.40, 217,540.99 and 69,082.90

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Solution

The fourth proportional to 145,023.40, 217,540.99 and 69,082.90 is: 103,627.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,023.40 : 217,540.99 = 69,082.90 : x
  2. Step 2: Convert to fraction form
    145,023.40/217,540.99 = 69,082.90/x
  3. Step 3: Cross multiply
    145,023.40x = 217,540.99 × 69,082.90
  4. Step 4: Simplify right side
    145,023.40x = 15,028,361,370.37
  5. Step 5: Solve for x
    x = 15,028,361,370.37/145,023.40
  6. Step 6: Final answer
    x = 103,627.15

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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.