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Finding the Fourth Proportional to 103,315.29, 154,969.89 and 43,375.69

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Solution

The fourth proportional to 103,315.29, 154,969.89 and 43,375.69 is: 65,062.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,315.29 : 154,969.89 = 43,375.69 : x
  2. Step 2: Convert to fraction form
    103,315.29/154,969.89 = 43,375.69/x
  3. Step 3: Cross multiply
    103,315.29x = 154,969.89 × 43,375.69
  4. Step 4: Simplify right side
    103,315.29x = 6,721,925,907.97
  5. Step 5: Solve for x
    x = 6,721,925,907.97/103,315.29
  6. Step 6: Final answer
    x = 65,062.26

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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.