Home / 102,787.28-154,178.52-47,383.28

Finding the Fourth Proportional to 102,787.28, 154,178.52 and 47,383.28

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Solution

The fourth proportional to 102,787.28, 154,178.52 and 47,383.28 is: 71,073.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,787.28 : 154,178.52 = 47,383.28 : x
  2. Step 2: Convert to fraction form
    102,787.28/154,178.52 = 47,383.28/x
  3. Step 3: Cross multiply
    102,787.28x = 154,178.52 × 47,383.28
  4. Step 4: Simplify right side
    102,787.28x = 7,305,483,983.15
  5. Step 5: Solve for x
    x = 7,305,483,983.15/102,787.28
  6. Step 6: Final answer
    x = 71,073.81

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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.