Home / 138,719.54-191,329.98-84,271.43

Finding the Fourth Proportional to 138,719.54, 191,329.98 and 84,271.43

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Solution

The fourth proportional to 138,719.54, 191,329.98 and 84,271.43 is: 116,232.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,719.54 : 191,329.98 = 84,271.43 : x
  2. Step 2: Convert to fraction form
    138,719.54/191,329.98 = 84,271.43/x
  3. Step 3: Cross multiply
    138,719.54x = 191,329.98 × 84,271.43
  4. Step 4: Simplify right side
    138,719.54x = 16,123,651,016.47
  5. Step 5: Solve for x
    x = 16,123,651,016.47/138,719.54
  6. Step 6: Final answer
    x = 116,232.01

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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.