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Finding the Fourth Proportional to 145,344.60, 218,016.90 and 137,568.60

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Solution

The fourth proportional to 145,344.60, 218,016.90 and 137,568.60 is: 206,352.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,344.60 : 218,016.90 = 137,568.60 : x
  2. Step 2: Convert to fraction form
    145,344.60/218,016.90 = 137,568.60/x
  3. Step 3: Cross multiply
    145,344.60x = 218,016.90 × 137,568.60
  4. Step 4: Simplify right side
    145,344.60x = 29,992,279,709.34
  5. Step 5: Solve for x
    x = 29,992,279,709.34/145,344.60
  6. Step 6: Final answer
    x = 206,352.90

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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.