Home / 220,787.10-304,691.81-123,998.67

Finding the Fourth Proportional to 220,787.10, 304,691.81 and 123,998.67

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Solution

The fourth proportional to 220,787.10, 304,691.81 and 123,998.67 is: 171,121.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,787.10 : 304,691.81 = 123,998.67 : x
  2. Step 2: Convert to fraction form
    220,787.10/304,691.81 = 123,998.67/x
  3. Step 3: Cross multiply
    220,787.10x = 304,691.81 × 123,998.67
  4. Step 4: Simplify right side
    220,787.10x = 37,781,378,579.90
  5. Step 5: Solve for x
    x = 37,781,378,579.90/220,787.10
  6. Step 6: Final answer
    x = 171,121.31

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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.