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Finding the Fourth Proportional to 136,465, 188,322.92 and 79,877.59

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Solution

The fourth proportional to 136,465, 188,322.92 and 79,877.59 is: 110,231.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,465 : 188,322.92 = 79,877.59 : x
  2. Step 2: Convert to fraction form
    136,465/188,322.92 = 79,877.59/x
  3. Step 3: Cross multiply
    136,465x = 188,322.92 × 79,877.59
  4. Step 4: Simplify right side
    136,465x = 15,042,780,991.36
  5. Step 5: Solve for x
    x = 15,042,780,991.36/136,465
  6. Step 6: Final answer
    x = 110,231.79

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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.