Home / 154,432.36-231,320.49-87,838.21

Finding the Fourth Proportional to 154,432.36, 231,320.49 and 87,838.21

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Solution

The fourth proportional to 154,432.36, 231,320.49 and 87,838.21 is: 131,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,432.36 : 231,320.49 = 87,838.21 : x
  2. Step 2: Convert to fraction form
    154,432.36/231,320.49 = 87,838.21/x
  3. Step 3: Cross multiply
    154,432.36x = 231,320.49 × 87,838.21
  4. Step 4: Simplify right side
    154,432.36x = 20,318,777,777.92
  5. Step 5: Solve for x
    x = 20,318,777,777.92/154,432.36
  6. Step 6: Final answer
    x = 131,570.73

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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.