Home / 137,519,500.50-189,803,869.11-78,821,508.33

Finding the Fourth Proportional to 137,519,500.50, 189,803,869.11 and 78,821,508.33

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Solution

The fourth proportional to 137,519,500.50, 189,803,869.11 and 78,821,508.33 is: 108,789,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,519,500.50 : 189,803,869.11 = 78,821,508.33 : x
  2. Step 2: Convert to fraction form
    137,519,500.50/189,803,869.11 = 78,821,508.33/x
  3. Step 3: Cross multiply
    137,519,500.50x = 189,803,869.11 × 78,821,508.33
  4. Step 4: Simplify right side
    137,519,500.50x = 14,960,627,250,120,096
  5. Step 5: Solve for x
    x = 14,960,627,250,120,096/137,519,500.50
  6. Step 6: Final answer
    x = 108,789,133.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.