Home / 102,984.16-154,490.85-31,912.38

Finding the Fourth Proportional to 102,984.16, 154,490.85 and 31,912.38

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Solution

The fourth proportional to 102,984.16, 154,490.85 and 31,912.38 is: 47,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,984.16 : 154,490.85 = 31,912.38 : x
  2. Step 2: Convert to fraction form
    102,984.16/154,490.85 = 31,912.38/x
  3. Step 3: Cross multiply
    102,984.16x = 154,490.85 × 31,912.38
  4. Step 4: Simplify right side
    102,984.16x = 4,930,170,711.72
  5. Step 5: Solve for x
    x = 4,930,170,711.72/102,984.16
  6. Step 6: Final answer
    x = 47,873.10

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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.