Home / 129,827.40-194,741.10-79,963.80

Finding the Fourth Proportional to 129,827.40, 194,741.10 and 79,963.80

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Solution

The fourth proportional to 129,827.40, 194,741.10 and 79,963.80 is: 119,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,827.40 : 194,741.10 = 79,963.80 : x
  2. Step 2: Convert to fraction form
    129,827.40/194,741.10 = 79,963.80/x
  3. Step 3: Cross multiply
    129,827.40x = 194,741.10 × 79,963.80
  4. Step 4: Simplify right side
    129,827.40x = 15,572,238,372.18
  5. Step 5: Solve for x
    x = 15,572,238,372.18/129,827.40
  6. Step 6: Final answer
    x = 119,945.70

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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.