Home / 149,143.29-205,822.07-81,164.64

Finding the Fourth Proportional to 149,143.29, 205,822.07 and 81,164.64

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Solution

The fourth proportional to 149,143.29, 205,822.07 and 81,164.64 is: 112,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,143.29 : 205,822.07 = 81,164.64 : x
  2. Step 2: Convert to fraction form
    149,143.29/205,822.07 = 81,164.64/x
  3. Step 3: Cross multiply
    149,143.29x = 205,822.07 × 81,164.64
  4. Step 4: Simplify right side
    149,143.29x = 16,705,473,809.78
  5. Step 5: Solve for x
    x = 16,705,473,809.78/149,143.29
  6. Step 6: Final answer
    x = 112,009.56

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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.