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Finding the Fourth Proportional to 230,121.60, 345,041.60 and 89,718.40

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Solution

The fourth proportional to 230,121.60, 345,041.60 and 89,718.40 is: 134,522.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,121.60 : 345,041.60 = 89,718.40 : x
  2. Step 2: Convert to fraction form
    230,121.60/345,041.60 = 89,718.40/x
  3. Step 3: Cross multiply
    230,121.60x = 345,041.60 × 89,718.40
  4. Step 4: Simplify right side
    230,121.60x = 30,956,580,285.44
  5. Step 5: Solve for x
    x = 30,956,580,285.44/230,121.60
  6. Step 6: Final answer
    x = 134,522.71

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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.