Home / 100,676.29-138,935.91-54,739.02

Finding the Fourth Proportional to 100,676.29, 138,935.91 and 54,739.02

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Solution

The fourth proportional to 100,676.29, 138,935.91 and 54,739.02 is: 75,541.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,676.29 : 138,935.91 = 54,739.02 : x
  2. Step 2: Convert to fraction form
    100,676.29/138,935.91 = 54,739.02/x
  3. Step 3: Cross multiply
    100,676.29x = 138,935.91 × 54,739.02
  4. Step 4: Simplify right side
    100,676.29x = 7,605,215,282.51
  5. Step 5: Solve for x
    x = 7,605,215,282.51/100,676.29
  6. Step 6: Final answer
    x = 75,541.28

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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.