Home / 120,956.20-181,434.30-83,631.40

Finding the Fourth Proportional to 120,956.20, 181,434.30 and 83,631.40

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Solution

The fourth proportional to 120,956.20, 181,434.30 and 83,631.40 is: 125,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,956.20 : 181,434.30 = 83,631.40 : x
  2. Step 2: Convert to fraction form
    120,956.20/181,434.30 = 83,631.40/x
  3. Step 3: Cross multiply
    120,956.20x = 181,434.30 × 83,631.40
  4. Step 4: Simplify right side
    120,956.20x = 15,173,604,517.02
  5. Step 5: Solve for x
    x = 15,173,604,517.02/120,956.20
  6. Step 6: Final answer
    x = 125,447.10

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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.