Home / 138,368,995.77-207,697,105.29-80,190,343.41

Finding the Fourth Proportional to 138,368,995.77, 207,697,105.29 and 80,190,343.41

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Solution

The fourth proportional to 138,368,995.77, 207,697,105.29 and 80,190,343.41 is: 120,368,743.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,368,995.77 : 207,697,105.29 = 80,190,343.41 : x
  2. Step 2: Convert to fraction form
    138,368,995.77/207,697,105.29 = 80,190,343.41/x
  3. Step 3: Cross multiply
    138,368,995.77x = 207,697,105.29 × 80,190,343.41
  4. Step 4: Simplify right side
    138,368,995.77x = 16,655,302,197,989,876
  5. Step 5: Solve for x
    x = 16,655,302,197,989,876/138,368,995.77
  6. Step 6: Final answer
    x = 120,368,743.77

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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.