Home / 154,935.40-213,769.38-87,865.96

Finding the Fourth Proportional to 154,935.40, 213,769.38 and 87,865.96

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Solution

The fourth proportional to 154,935.40, 213,769.38 and 87,865.96 is: 121,231.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,935.40 : 213,769.38 = 87,865.96 : x
  2. Step 2: Convert to fraction form
    154,935.40/213,769.38 = 87,865.96/x
  3. Step 3: Cross multiply
    154,935.40x = 213,769.38 × 87,865.96
  4. Step 4: Simplify right side
    154,935.40x = 18,783,051,792.30
  5. Step 5: Solve for x
    x = 18,783,051,792.30/154,935.40
  6. Step 6: Final answer
    x = 121,231.51

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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.