Home / 103,905.88-155,615.82-51,145.72

Finding the Fourth Proportional to 103,905.88, 155,615.82 and 51,145.72

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Solution

The fourth proportional to 103,905.88, 155,615.82 and 51,145.72 is: 76,598.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,905.88 : 155,615.82 = 51,145.72 : x
  2. Step 2: Convert to fraction form
    103,905.88/155,615.82 = 51,145.72/x
  3. Step 3: Cross multiply
    103,905.88x = 155,615.82 × 51,145.72
  4. Step 4: Simplify right side
    103,905.88x = 7,959,083,157.29
  5. Step 5: Solve for x
    x = 7,959,083,157.29/103,905.88
  6. Step 6: Final answer
    x = 76,598.97

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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.