Home / 145,609.64-218,414.30-45,778.56

Finding the Fourth Proportional to 145,609.64, 218,414.30 and 45,778.56

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Solution

The fourth proportional to 145,609.64, 218,414.30 and 45,778.56 is: 68,667.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,609.64 : 218,414.30 = 45,778.56 : x
  2. Step 2: Convert to fraction form
    145,609.64/218,414.30 = 45,778.56/x
  3. Step 3: Cross multiply
    145,609.64x = 218,414.30 × 45,778.56
  4. Step 4: Simplify right side
    145,609.64x = 9,998,692,137.41
  5. Step 5: Solve for x
    x = 9,998,692,137.41/145,609.64
  6. Step 6: Final answer
    x = 68,667.79

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1.5x scale

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.