Home / 251,868.12-347,576.40-138,690

Finding the Fourth Proportional to 251,868.12, 347,576.40 and 138,690

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Solution

The fourth proportional to 251,868.12, 347,576.40 and 138,690 is: 191,391.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,868.12 : 347,576.40 = 138,690 : x
  2. Step 2: Convert to fraction form
    251,868.12/347,576.40 = 138,690/x
  3. Step 3: Cross multiply
    251,868.12x = 347,576.40 × 138,690
  4. Step 4: Simplify right side
    251,868.12x = 48,205,370,916
  5. Step 5: Solve for x
    x = 48,205,370,916/251,868.12
  6. Step 6: Final answer
    x = 191,391.32

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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.