Home / 138,932.65-191,727.25-75,270.45

Finding the Fourth Proportional to 138,932.65, 191,727.25 and 75,270.45

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Solution

The fourth proportional to 138,932.65, 191,727.25 and 75,270.45 is: 103,873.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,932.65 : 191,727.25 = 75,270.45 : x
  2. Step 2: Convert to fraction form
    138,932.65/191,727.25 = 75,270.45/x
  3. Step 3: Cross multiply
    138,932.65x = 191,727.25 × 75,270.45
  4. Step 4: Simplify right side
    138,932.65x = 14,431,395,049.77
  5. Step 5: Solve for x
    x = 14,431,395,049.77/138,932.65
  6. Step 6: Final answer
    x = 103,873.32

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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.