Home / 135,030.44-186,357.84-81,342.56

Finding the Fourth Proportional to 135,030.44, 186,357.84 and 81,342.56

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Solution

The fourth proportional to 135,030.44, 186,357.84 and 81,342.56 is: 112,262.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,030.44 : 186,357.84 = 81,342.56 : x
  2. Step 2: Convert to fraction form
    135,030.44/186,357.84 = 81,342.56/x
  3. Step 3: Cross multiply
    135,030.44x = 186,357.84 × 81,342.56
  4. Step 4: Simplify right side
    135,030.44x = 15,158,823,781.67
  5. Step 5: Solve for x
    x = 15,158,823,781.67/135,030.44
  6. Step 6: Final answer
    x = 112,262.27

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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.