Home / 121,930.20-183,284.10-114,931.80

Finding the Fourth Proportional to 121,930.20, 183,284.10 and 114,931.80

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Solution

The fourth proportional to 121,930.20, 183,284.10 and 114,931.80 is: 172,764.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,930.20 : 183,284.10 = 114,931.80 : x
  2. Step 2: Convert to fraction form
    121,930.20/183,284.10 = 114,931.80/x
  3. Step 3: Cross multiply
    121,930.20x = 183,284.10 × 114,931.80
  4. Step 4: Simplify right side
    121,930.20x = 21,065,171,524.38
  5. Step 5: Solve for x
    x = 21,065,171,524.38/121,930.20
  6. Step 6: Final answer
    x = 172,764.18

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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.