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Finding the Fourth Proportional to 194,744.20, 292,116.30 and 76,419.40

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Solution

The fourth proportional to 194,744.20, 292,116.30 and 76,419.40 is: 114,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,744.20 : 292,116.30 = 76,419.40 : x
  2. Step 2: Convert to fraction form
    194,744.20/292,116.30 = 76,419.40/x
  3. Step 3: Cross multiply
    194,744.20x = 292,116.30 × 76,419.40
  4. Step 4: Simplify right side
    194,744.20x = 22,323,352,376.22
  5. Step 5: Solve for x
    x = 22,323,352,376.22/194,744.20
  6. Step 6: Final answer
    x = 114,629.10

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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.