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Finding the Fourth Proportional to 194,811.80, 292,217.70 and 118,704.20

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Solution

The fourth proportional to 194,811.80, 292,217.70 and 118,704.20 is: 178,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,811.80 : 292,217.70 = 118,704.20 : x
  2. Step 2: Convert to fraction form
    194,811.80/292,217.70 = 118,704.20/x
  3. Step 3: Cross multiply
    194,811.80x = 292,217.70 × 118,704.20
  4. Step 4: Simplify right side
    194,811.80x = 34,687,468,304.34
  5. Step 5: Solve for x
    x = 34,687,468,304.34/194,811.80
  6. Step 6: Final answer
    x = 178,056.30

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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.