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Finding the Fourth Proportional to 134,777.63, 186,065.97 and 81,074.63

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Solution

The fourth proportional to 134,777.63, 186,065.97 and 81,074.63 is: 111,926.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,777.63 : 186,065.97 = 81,074.63 : x
  2. Step 2: Convert to fraction form
    134,777.63/186,065.97 = 81,074.63/x
  3. Step 3: Cross multiply
    134,777.63x = 186,065.97 × 81,074.63
  4. Step 4: Simplify right side
    134,777.63x = 15,085,229,673.34
  5. Step 5: Solve for x
    x = 15,085,229,673.34/134,777.63
  6. Step 6: Final answer
    x = 111,926.81

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1.5x scale

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.