Home / 102,912.30-154,390.05-31,829.10

Finding the Fourth Proportional to 102,912.30, 154,390.05 and 31,829.10

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Solution

The fourth proportional to 102,912.30, 154,390.05 and 31,829.10 is: 47,750.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,912.30 : 154,390.05 = 31,829.10 : x
  2. Step 2: Convert to fraction form
    102,912.30/154,390.05 = 31,829.10/x
  3. Step 3: Cross multiply
    102,912.30x = 154,390.05 × 31,829.10
  4. Step 4: Simplify right side
    102,912.30x = 4,914,096,340.46
  5. Step 5: Solve for x
    x = 4,914,096,340.46/102,912.30
  6. Step 6: Final answer
    x = 47,750.33

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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.