Home / 129,628.70-194,443.05-40,909.40

Finding the Fourth Proportional to 129,628.70, 194,443.05 and 40,909.40

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Solution

The fourth proportional to 129,628.70, 194,443.05 and 40,909.40 is: 61,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,628.70 : 194,443.05 = 40,909.40 : x
  2. Step 2: Convert to fraction form
    129,628.70/194,443.05 = 40,909.40/x
  3. Step 3: Cross multiply
    129,628.70x = 194,443.05 × 40,909.40
  4. Step 4: Simplify right side
    129,628.70x = 7,954,548,509.67
  5. Step 5: Solve for x
    x = 7,954,548,509.67/129,628.70
  6. Step 6: Final answer
    x = 61,364.10

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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.