Home / 138,266.82-190,822.50-84,587.51

Finding the Fourth Proportional to 138,266.82, 190,822.50 and 84,587.51

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Solution

The fourth proportional to 138,266.82, 190,822.50 and 84,587.51 is: 116,739.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,266.82 : 190,822.50 = 84,587.51 : x
  2. Step 2: Convert to fraction form
    138,266.82/190,822.50 = 84,587.51/x
  3. Step 3: Cross multiply
    138,266.82x = 190,822.50 × 84,587.51
  4. Step 4: Simplify right side
    138,266.82x = 16,141,200,604.03
  5. Step 5: Solve for x
    x = 16,141,200,604.03/138,266.82
  6. Step 6: Final answer
    x = 116,739.51

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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.