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Finding the Fourth Proportional to 102,554.39, 153,847.85 and 43,390.50

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Solution

The fourth proportional to 102,554.39, 153,847.85 and 43,390.50 is: 65,092.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,554.39 : 153,847.85 = 43,390.50 : x
  2. Step 2: Convert to fraction form
    102,554.39/153,847.85 = 43,390.50/x
  3. Step 3: Cross multiply
    102,554.39x = 153,847.85 × 43,390.50
  4. Step 4: Simplify right side
    102,554.39x = 6,675,535,135.43
  5. Step 5: Solve for x
    x = 6,675,535,135.43/102,554.39
  6. Step 6: Final answer
    x = 65,092.63

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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.