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Finding the Fourth Proportional to 154,649.88, 231,938.64 and 87,211.04

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Solution

The fourth proportional to 154,649.88, 231,938.64 and 87,211.04 is: 130,796.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,649.88 : 231,938.64 = 87,211.04 : x
  2. Step 2: Convert to fraction form
    154,649.88/231,938.64 = 87,211.04/x
  3. Step 3: Cross multiply
    154,649.88x = 231,938.64 × 87,211.04
  4. Step 4: Simplify right side
    154,649.88x = 20,227,608,850.89
  5. Step 5: Solve for x
    x = 20,227,608,850.89/154,649.88
  6. Step 6: Final answer
    x = 130,796.15

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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.