Home / 138,943.27-191,671.27-87,869.94

Finding the Fourth Proportional to 138,943.27, 191,671.27 and 87,869.94

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Solution

The fourth proportional to 138,943.27, 191,671.27 and 87,869.94 is: 121,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,943.27 : 191,671.27 = 87,869.94 : x
  2. Step 2: Convert to fraction form
    138,943.27/191,671.27 = 87,869.94/x
  3. Step 3: Cross multiply
    138,943.27x = 191,671.27 × 87,869.94
  4. Step 4: Simplify right side
    138,943.27x = 16,842,142,994.62
  5. Step 5: Solve for x
    x = 16,842,142,994.62/138,943.27
  6. Step 6: Final answer
    x = 121,215.97

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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.