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Finding the Fourth Proportional to 154,871.92, 212,331.80 and 152,072.56

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Solution

The fourth proportional to 154,871.92, 212,331.80 and 152,072.56 is: 208,493.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,871.92 : 212,331.80 = 152,072.56 : x
  2. Step 2: Convert to fraction form
    154,871.92/212,331.80 = 152,072.56/x
  3. Step 3: Cross multiply
    154,871.92x = 212,331.80 × 152,072.56
  4. Step 4: Simplify right side
    154,871.92x = 32,289,840,395.41
  5. Step 5: Solve for x
    x = 32,289,840,395.41/154,871.92
  6. Step 6: Final answer
    x = 208,493.83

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.