Home / 154,561.76-231,685.79-87,864.07

Finding the Fourth Proportional to 154,561.76, 231,685.79 and 87,864.07

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Solution

The fourth proportional to 154,561.76, 231,685.79 and 87,864.07 is: 131,706.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,561.76 : 231,685.79 = 87,864.07 : x
  2. Step 2: Convert to fraction form
    154,561.76/231,685.79 = 87,864.07/x
  3. Step 3: Cross multiply
    154,561.76x = 231,685.79 × 87,864.07
  4. Step 4: Simplify right side
    154,561.76x = 20,356,856,470.57
  5. Step 5: Solve for x
    x = 20,356,856,470.57/154,561.76
  6. Step 6: Final answer
    x = 131,706.94

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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.