Home / 129,615.40-194,423.10-123,491.80

Finding the Fourth Proportional to 129,615.40, 194,423.10 and 123,491.80

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Solution

The fourth proportional to 129,615.40, 194,423.10 and 123,491.80 is: 185,237.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,615.40 : 194,423.10 = 123,491.80 : x
  2. Step 2: Convert to fraction form
    129,615.40/194,423.10 = 123,491.80/x
  3. Step 3: Cross multiply
    129,615.40x = 194,423.10 × 123,491.80
  4. Step 4: Simplify right side
    129,615.40x = 24,009,658,580.58
  5. Step 5: Solve for x
    x = 24,009,658,580.58/129,615.40
  6. Step 6: Final answer
    x = 185,237.70

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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.