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Finding the Fourth Proportional to 154,683, 231,988.86 and 87,244.56

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Solution

The fourth proportional to 154,683, 231,988.86 and 87,244.56 is: 130,846.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,683 : 231,988.86 = 87,244.56 : x
  2. Step 2: Convert to fraction form
    154,683/231,988.86 = 87,244.56/x
  3. Step 3: Cross multiply
    154,683x = 231,988.86 × 87,244.56
  4. Step 4: Simplify right side
    154,683x = 20,239,766,015.60
  5. Step 5: Solve for x
    x = 20,239,766,015.60/154,683
  6. Step 6: Final answer
    x = 130,846.74

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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.