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Finding the Fourth Proportional to 118,868.80, 178,311.30 and 37,809.40

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Solution

The fourth proportional to 118,868.80, 178,311.30 and 37,809.40 is: 56,716.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,868.80 : 178,311.30 = 37,809.40 : x
  2. Step 2: Convert to fraction form
    118,868.80/178,311.30 = 37,809.40/x
  3. Step 3: Cross multiply
    118,868.80x = 178,311.30 × 37,809.40
  4. Step 4: Simplify right side
    118,868.80x = 6,741,843,266.22
  5. Step 5: Solve for x
    x = 6,741,843,266.22/118,868.80
  6. Step 6: Final answer
    x = 56,716.68

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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.