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Finding the Fourth Proportional to 169,342.50, 253,639 and 69,198.87

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Solution

The fourth proportional to 169,342.50, 253,639 and 69,198.87 is: 103,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,342.50 : 253,639 = 69,198.87 : x
  2. Step 2: Convert to fraction form
    169,342.50/253,639 = 69,198.87/x
  3. Step 3: Cross multiply
    169,342.50x = 253,639 × 69,198.87
  4. Step 4: Simplify right side
    169,342.50x = 17,551,532,187.93
  5. Step 5: Solve for x
    x = 17,551,532,187.93/169,342.50
  6. Step 6: Final answer
    x = 103,645.17

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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.