Home / 105,431.85-157,972.82-74,201.49

Finding the Fourth Proportional to 105,431.85, 157,972.82 and 74,201.49

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Solution

The fourth proportional to 105,431.85, 157,972.82 and 74,201.49 is: 111,179.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,431.85 : 157,972.82 = 74,201.49 : x
  2. Step 2: Convert to fraction form
    105,431.85/157,972.82 = 74,201.49/x
  3. Step 3: Cross multiply
    105,431.85x = 157,972.82 × 74,201.49
  4. Step 4: Simplify right side
    105,431.85x = 11,721,818,252.49
  5. Step 5: Solve for x
    x = 11,721,818,252.49/105,431.85
  6. Step 6: Final answer
    x = 111,179.10

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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.