Home / 154,533.36-231,408-129,507.60

Finding the Fourth Proportional to 154,533.36, 231,408 and 129,507.60

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Solution

The fourth proportional to 154,533.36, 231,408 and 129,507.60 is: 193,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,533.36 : 231,408 = 129,507.60 : x
  2. Step 2: Convert to fraction form
    154,533.36/231,408 = 129,507.60/x
  3. Step 3: Cross multiply
    154,533.36x = 231,408 × 129,507.60
  4. Step 4: Simplify right side
    154,533.36x = 29,969,094,700.80
  5. Step 5: Solve for x
    x = 29,969,094,700.80/154,533.36
  6. Step 6: Final answer
    x = 193,932.85

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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.