Home / 136,969.76-189,039.96-83,271.60

Finding the Fourth Proportional to 136,969.76, 189,039.96 and 83,271.60

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Solution

The fourth proportional to 136,969.76, 189,039.96 and 83,271.60 is: 114,928.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,969.76 : 189,039.96 = 83,271.60 : x
  2. Step 2: Convert to fraction form
    136,969.76/189,039.96 = 83,271.60/x
  3. Step 3: Cross multiply
    136,969.76x = 189,039.96 × 83,271.60
  4. Step 4: Simplify right side
    136,969.76x = 15,741,659,933.14
  5. Step 5: Solve for x
    x = 15,741,659,933.14/136,969.76
  6. Step 6: Final answer
    x = 114,928.00

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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.