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Finding the Fourth Proportional to 158,554.38, 218,677.98 and 139,393.44

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Solution

The fourth proportional to 158,554.38, 218,677.98 and 139,393.44 is: 192,251.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,554.38 : 218,677.98 = 139,393.44 : x
  2. Step 2: Convert to fraction form
    158,554.38/218,677.98 = 139,393.44/x
  3. Step 3: Cross multiply
    158,554.38x = 218,677.98 × 139,393.44
  4. Step 4: Simplify right side
    158,554.38x = 30,482,275,884.45
  5. Step 5: Solve for x
    x = 30,482,275,884.45/158,554.38
  6. Step 6: Final answer
    x = 192,251.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.