Home / 154,383.62-231,787.95-78,533.51

Finding the Fourth Proportional to 154,383.62, 231,787.95 and 78,533.51

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Solution

The fourth proportional to 154,383.62, 231,787.95 and 78,533.51 is: 117,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,383.62 : 231,787.95 = 78,533.51 : x
  2. Step 2: Convert to fraction form
    154,383.62/231,787.95 = 78,533.51/x
  3. Step 3: Cross multiply
    154,383.62x = 231,787.95 × 78,533.51
  4. Step 4: Simplify right side
    154,383.62x = 18,203,121,289.20
  5. Step 5: Solve for x
    x = 18,203,121,289.20/154,383.62
  6. Step 6: Final answer
    x = 117,908.37

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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.