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Finding the Fourth Proportional to 154,361.62, 213,024.90 and 89,825.68

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Solution

The fourth proportional to 154,361.62, 213,024.90 and 89,825.68 is: 123,962.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,361.62 : 213,024.90 = 89,825.68 : x
  2. Step 2: Convert to fraction form
    154,361.62/213,024.90 = 89,825.68/x
  3. Step 3: Cross multiply
    154,361.62x = 213,024.90 × 89,825.68
  4. Step 4: Simplify right side
    154,361.62x = 19,135,106,499.43
  5. Step 5: Solve for x
    x = 19,135,106,499.43/154,361.62
  6. Step 6: Final answer
    x = 123,962.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.