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Finding the Fourth Proportional to 103,087.98, 154,536.82 and 71,512.94

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Solution

The fourth proportional to 103,087.98, 154,536.82 and 71,512.94 is: 107,203.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,087.98 : 154,536.82 = 71,512.94 : x
  2. Step 2: Convert to fraction form
    103,087.98/154,536.82 = 71,512.94/x
  3. Step 3: Cross multiply
    103,087.98x = 154,536.82 × 71,512.94
  4. Step 4: Simplify right side
    103,087.98x = 11,051,382,336.45
  5. Step 5: Solve for x
    x = 11,051,382,336.45/103,087.98
  6. Step 6: Final answer
    x = 107,203.40

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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.