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Finding the Fourth Proportional to 121,644.60, 182,466.90 and 109,397.40

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Solution

The fourth proportional to 121,644.60, 182,466.90 and 109,397.40 is: 164,096.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,644.60 : 182,466.90 = 109,397.40 : x
  2. Step 2: Convert to fraction form
    121,644.60/182,466.90 = 109,397.40/x
  3. Step 3: Cross multiply
    121,644.60x = 182,466.90 × 109,397.40
  4. Step 4: Simplify right side
    121,644.60x = 19,961,404,446.06
  5. Step 5: Solve for x
    x = 19,961,404,446.06/121,644.60
  6. Step 6: Final answer
    x = 164,096.10

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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.