Home / 138,936.69-191,732.83-75,274.49

Finding the Fourth Proportional to 138,936.69, 191,732.83 and 75,274.49

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Solution

The fourth proportional to 138,936.69, 191,732.83 and 75,274.49 is: 103,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,936.69 : 191,732.83 = 75,274.49 : x
  2. Step 2: Convert to fraction form
    138,936.69/191,732.83 = 75,274.49/x
  3. Step 3: Cross multiply
    138,936.69x = 191,732.83 × 75,274.49
  4. Step 4: Simplify right side
    138,936.69x = 14,432,590,994.51
  5. Step 5: Solve for x
    x = 14,432,590,994.51/138,936.69
  6. Step 6: Final answer
    x = 103,878.90

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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.