Home / 129,867.40-194,801.10-74,417.80

Finding the Fourth Proportional to 129,867.40, 194,801.10 and 74,417.80

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Solution

The fourth proportional to 129,867.40, 194,801.10 and 74,417.80 is: 111,626.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,867.40 : 194,801.10 = 74,417.80 : x
  2. Step 2: Convert to fraction form
    129,867.40/194,801.10 = 74,417.80/x
  3. Step 3: Cross multiply
    129,867.40x = 194,801.10 × 74,417.80
  4. Step 4: Simplify right side
    129,867.40x = 14,496,669,299.58
  5. Step 5: Solve for x
    x = 14,496,669,299.58/129,867.40
  6. Step 6: Final answer
    x = 111,626.70

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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.