Home / 138,727.54-191,341.02-84,279.43

Finding the Fourth Proportional to 138,727.54, 191,341.02 and 84,279.43

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Solution

The fourth proportional to 138,727.54, 191,341.02 and 84,279.43 is: 116,243.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,727.54 : 191,341.02 = 84,279.43 : x
  2. Step 2: Convert to fraction form
    138,727.54/191,341.02 = 84,279.43/x
  3. Step 3: Cross multiply
    138,727.54x = 191,341.02 × 84,279.43
  4. Step 4: Simplify right side
    138,727.54x = 16,126,112,101.22
  5. Step 5: Solve for x
    x = 16,126,112,101.22/138,727.54
  6. Step 6: Final answer
    x = 116,243.05

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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.