Home / 129,200.11-193,839.58-66,064.59

Finding the Fourth Proportional to 129,200.11, 193,839.58 and 66,064.59

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Solution

The fourth proportional to 129,200.11, 193,839.58 and 66,064.59 is: 99,117.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,200.11 : 193,839.58 = 66,064.59 : x
  2. Step 2: Convert to fraction form
    129,200.11/193,839.58 = 66,064.59/x
  3. Step 3: Cross multiply
    129,200.11x = 193,839.58 × 66,064.59
  4. Step 4: Simplify right side
    129,200.11x = 12,805,931,915.88
  5. Step 5: Solve for x
    x = 12,805,931,915.88/129,200.11
  6. Step 6: Final answer
    x = 99,117.03

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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.