Home / 129,638.73-194,317.47-66,372.06

Finding the Fourth Proportional to 129,638.73, 194,317.47 and 66,372.06

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Solution

The fourth proportional to 129,638.73, 194,317.47 and 66,372.06 is: 99,486.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,638.73 : 194,317.47 = 66,372.06 : x
  2. Step 2: Convert to fraction form
    129,638.73/194,317.47 = 66,372.06/x
  3. Step 3: Cross multiply
    129,638.73x = 194,317.47 × 66,372.06
  4. Step 4: Simplify right side
    129,638.73x = 12,897,250,777.89
  5. Step 5: Solve for x
    x = 12,897,250,777.89/129,638.73
  6. Step 6: Final answer
    x = 99,486.09

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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.