Home / 129,165.20-193,747.80-84,928.40

Finding the Fourth Proportional to 129,165.20, 193,747.80 and 84,928.40

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Solution

The fourth proportional to 129,165.20, 193,747.80 and 84,928.40 is: 127,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,165.20 : 193,747.80 = 84,928.40 : x
  2. Step 2: Convert to fraction form
    129,165.20/193,747.80 = 84,928.40/x
  3. Step 3: Cross multiply
    129,165.20x = 193,747.80 × 84,928.40
  4. Step 4: Simplify right side
    129,165.20x = 16,454,690,657.52
  5. Step 5: Solve for x
    x = 16,454,690,657.52/129,165.20
  6. Step 6: Final answer
    x = 127,392.60

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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.