Home / 136,956.63-189,120.38-86,057.55

Finding the Fourth Proportional to 136,956.63, 189,120.38 and 86,057.55

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Solution

The fourth proportional to 136,956.63, 189,120.38 and 86,057.55 is: 118,834.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,956.63 : 189,120.38 = 86,057.55 : x
  2. Step 2: Convert to fraction form
    136,956.63/189,120.38 = 86,057.55/x
  3. Step 3: Cross multiply
    136,956.63x = 189,120.38 × 86,057.55
  4. Step 4: Simplify right side
    136,956.63x = 16,275,236,127.58
  5. Step 5: Solve for x
    x = 16,275,236,127.58/136,956.63
  6. Step 6: Final answer
    x = 118,834.96

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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.