Home / 143,246.40-214,869.60-76,891.20

Finding the Fourth Proportional to 143,246.40, 214,869.60 and 76,891.20

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Solution

The fourth proportional to 143,246.40, 214,869.60 and 76,891.20 is: 115,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,246.40 : 214,869.60 = 76,891.20 : x
  2. Step 2: Convert to fraction form
    143,246.40/214,869.60 = 76,891.20/x
  3. Step 3: Cross multiply
    143,246.40x = 214,869.60 × 76,891.20
  4. Step 4: Simplify right side
    143,246.40x = 16,521,581,387.52
  5. Step 5: Solve for x
    x = 16,521,581,387.52/143,246.40
  6. Step 6: Final answer
    x = 115,336.80

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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.