Home / 138,724.64-191,443.88-84,258.44

Finding the Fourth Proportional to 138,724.64, 191,443.88 and 84,258.44

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Solution

The fourth proportional to 138,724.64, 191,443.88 and 84,258.44 is: 116,279.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,724.64 : 191,443.88 = 84,258.44 : x
  2. Step 2: Convert to fraction form
    138,724.64/191,443.88 = 84,258.44/x
  3. Step 3: Cross multiply
    138,724.64x = 191,443.88 × 84,258.44
  4. Step 4: Simplify right side
    138,724.64x = 16,130,761,297.84
  5. Step 5: Solve for x
    x = 16,130,761,297.84/138,724.64
  6. Step 6: Final answer
    x = 116,279.00

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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.