Home / 129,623.60-194,435.40-103,379.60

Finding the Fourth Proportional to 129,623.60, 194,435.40 and 103,379.60

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Solution

The fourth proportional to 129,623.60, 194,435.40 and 103,379.60 is: 155,069.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,623.60 : 194,435.40 = 103,379.60 : x
  2. Step 2: Convert to fraction form
    129,623.60/194,435.40 = 103,379.60/x
  3. Step 3: Cross multiply
    129,623.60x = 194,435.40 × 103,379.60
  4. Step 4: Simplify right side
    129,623.60x = 20,100,653,877.84
  5. Step 5: Solve for x
    x = 20,100,653,877.84/129,623.60
  6. Step 6: Final answer
    x = 155,069.40

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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.