Home / 138,652.36-191,341.33-81,293.16

Finding the Fourth Proportional to 138,652.36, 191,341.33 and 81,293.16

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Solution

The fourth proportional to 138,652.36, 191,341.33 and 81,293.16 is: 112,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,652.36 : 191,341.33 = 81,293.16 : x
  2. Step 2: Convert to fraction form
    138,652.36/191,341.33 = 81,293.16/x
  3. Step 3: Cross multiply
    138,652.36x = 191,341.33 × 81,293.16
  4. Step 4: Simplify right side
    138,652.36x = 15,554,741,354.30
  5. Step 5: Solve for x
    x = 15,554,741,354.30/138,652.36
  6. Step 6: Final answer
    x = 112,185.19

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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.