Home / 121,339.20-182,008.80-91,814.70

Finding the Fourth Proportional to 121,339.20, 182,008.80 and 91,814.70

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Solution

The fourth proportional to 121,339.20, 182,008.80 and 91,814.70 is: 137,722.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,339.20 : 182,008.80 = 91,814.70 : x
  2. Step 2: Convert to fraction form
    121,339.20/182,008.80 = 91,814.70/x
  3. Step 3: Cross multiply
    121,339.20x = 182,008.80 × 91,814.70
  4. Step 4: Simplify right side
    121,339.20x = 16,711,083,369.36
  5. Step 5: Solve for x
    x = 16,711,083,369.36/121,339.20
  6. Step 6: Final answer
    x = 137,722.05

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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.