Home / 129,638.22-194,316.72-66,371.58

Finding the Fourth Proportional to 129,638.22, 194,316.72 and 66,371.58

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Solution

The fourth proportional to 129,638.22, 194,316.72 and 66,371.58 is: 99,485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,638.22 : 194,316.72 = 66,371.58 : x
  2. Step 2: Convert to fraction form
    129,638.22/194,316.72 = 66,371.58/x
  3. Step 3: Cross multiply
    129,638.22x = 194,316.72 × 66,371.58
  4. Step 4: Simplify right side
    129,638.22x = 12,897,107,726.82
  5. Step 5: Solve for x
    x = 12,897,107,726.82/129,638.22
  6. Step 6: Final answer
    x = 99,485.38

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1.5x scale

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.