Home / 129,827.61-194,739.39-66,611.25

Finding the Fourth Proportional to 129,827.61, 194,739.39 and 66,611.25

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Solution

The fourth proportional to 129,827.61, 194,739.39 and 66,611.25 is: 99,915.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,827.61 : 194,739.39 = 66,611.25 : x
  2. Step 2: Convert to fraction form
    129,827.61/194,739.39 = 66,611.25/x
  3. Step 3: Cross multiply
    129,827.61x = 194,739.39 × 66,611.25
  4. Step 4: Simplify right side
    129,827.61x = 12,971,834,437.13
  5. Step 5: Solve for x
    x = 12,971,834,437.13/129,827.61
  6. Step 6: Final answer
    x = 99,915.84

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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.