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Finding the Fourth Proportional to 120,912.84, 181,298.88 and 88,911

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Solution

The fourth proportional to 120,912.84, 181,298.88 and 88,911 is: 133,314.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,912.84 : 181,298.88 = 88,911 : x
  2. Step 2: Convert to fraction form
    120,912.84/181,298.88 = 88,911/x
  3. Step 3: Cross multiply
    120,912.84x = 181,298.88 × 88,911
  4. Step 4: Simplify right side
    120,912.84x = 16,119,464,719.68
  5. Step 5: Solve for x
    x = 16,119,464,719.68/120,912.84
  6. Step 6: Final answer
    x = 133,314.75

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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.