Home / 138,371.36-190,966.86-84,692.12

Finding the Fourth Proportional to 138,371.36, 190,966.86 and 84,692.12

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Solution

The fourth proportional to 138,371.36, 190,966.86 and 84,692.12 is: 116,883.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,371.36 : 190,966.86 = 84,692.12 : x
  2. Step 2: Convert to fraction form
    138,371.36/190,966.86 = 84,692.12/x
  3. Step 3: Cross multiply
    138,371.36x = 190,966.86 × 84,692.12
  4. Step 4: Simplify right side
    138,371.36x = 16,173,388,223.14
  5. Step 5: Solve for x
    x = 16,173,388,223.14/138,371.36
  6. Step 6: Final answer
    x = 116,883.93

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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.