Home / 138,102.34-190,607.44-86,443.41

Finding the Fourth Proportional to 138,102.34, 190,607.44 and 86,443.41

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Solution

The fourth proportional to 138,102.34, 190,607.44 and 86,443.41 is: 119,308.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,102.34 : 190,607.44 = 86,443.41 : x
  2. Step 2: Convert to fraction form
    138,102.34/190,607.44 = 86,443.41/x
  3. Step 3: Cross multiply
    138,102.34x = 190,607.44 × 86,443.41
  4. Step 4: Simplify right side
    138,102.34x = 16,476,757,084.97
  5. Step 5: Solve for x
    x = 16,476,757,084.97/138,102.34
  6. Step 6: Final answer
    x = 119,308.31

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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.