Home / 129,302.20-193,838.10-76,655.80

Finding the Fourth Proportional to 129,302.20, 193,838.10 and 76,655.80

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Solution

The fourth proportional to 129,302.20, 193,838.10 and 76,655.80 is: 114,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,302.20 : 193,838.10 = 76,655.80 : x
  2. Step 2: Convert to fraction form
    129,302.20/193,838.10 = 76,655.80/x
  3. Step 3: Cross multiply
    129,302.20x = 193,838.10 × 76,655.80
  4. Step 4: Simplify right side
    129,302.20x = 14,858,814,625.98
  5. Step 5: Solve for x
    x = 14,858,814,625.98/129,302.20
  6. Step 6: Final answer
    x = 114,915.40

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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.