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Finding the Fourth Proportional to 230,147.40, 345,015.90 and 89,873.40

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Solution

The fourth proportional to 230,147.40, 345,015.90 and 89,873.40 is: 134,729.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,147.40 : 345,015.90 = 89,873.40 : x
  2. Step 2: Convert to fraction form
    230,147.40/345,015.90 = 89,873.40/x
  3. Step 3: Cross multiply
    230,147.40x = 345,015.90 × 89,873.40
  4. Step 4: Simplify right side
    230,147.40x = 31,007,751,987.06
  5. Step 5: Solve for x
    x = 31,007,751,987.06/230,147.40
  6. Step 6: Final answer
    x = 134,729.97

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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.