Home / 138,238,435.27-207,356,233.53-79,908,998.56

Finding the Fourth Proportional to 138,238,435.27, 207,356,233.53 and 79,908,998.56

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Solution

The fourth proportional to 138,238,435.27, 207,356,233.53 and 79,908,998.56 is: 119,862,677.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,238,435.27 : 207,356,233.53 = 79,908,998.56 : x
  2. Step 2: Convert to fraction form
    138,238,435.27/207,356,233.53 = 79,908,998.56/x
  3. Step 3: Cross multiply
    138,238,435.27x = 207,356,233.53 × 79,908,998.56
  4. Step 4: Simplify right side
    138,238,435.27x = 16,569,628,965,519,014
  5. Step 5: Solve for x
    x = 16,569,628,965,519,014/138,238,435.27
  6. Step 6: Final answer
    x = 119,862,677.36

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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.